Sell your things online
Clothes, books, toys, small appliances: what is sitting in your cupboards can find a buyer on second-hand sites.
Estimate not available
You need: Smartphone
In Belgium, many side-income ideas are available without leaving your area: flexi-jobs, student jobs, one-off gigs, local services or online activities. This page lists SmartExtraLab ideas that apply in Belgium, with the country filter already set so you can browse faster. You can narrow by time available, season, budget, skills or means such as a bike, a car or a computer.
Each sheet summarises the idea, practical steps, points to watch and an indicative earnings range. Before you start, check the rules that apply to you in our rules guide, especially status, caps and declarations. The information is general and does not replace personal advice. Browse the list, open the sheets that fit your situation, compare two or three options, then try one idea on a small scale before you commit more time.
78 ideas
Sheets mark Belgium when the idea applies there. Use the region filter (Wallonia, Flanders, Brussels) if you want to stay local. Exact rules (flexi-job, status, caps) depend on your situation: see the rules guide.
Not always. Some gigs go through an employer or platform; others stay occasional. The rules guide summarises the general framework in Belgium and France. Also read the chosen sheet before you commit.
Each sheet gives an indicative range based on time and context. It is not a guarantee. Compare a few ideas and test one on a small scale first.
Clothes, books, toys, small appliances: what is sitting in your cupboards can find a buyer on second-hand sites.
Estimate not available
You need: Smartphone
A day on a stall lets you sell lots of items at once, meeting buyers face to face.
Estimate not available
You need: Customer contact, Selling, Car
Buy undervalued items at flea markets or charity shops, then resell them online at the right price.
Estimate not available
You need: Creative, Selling, Car
Assignments lasting from a few days to a few weeks, in logistics, industry, retail or events.
Estimate From €13.56 gross per hour
You need: Good physical condition
Retail, catering, activity leading, logistics: many employers recruit students, especially in summer and at weekends.
Estimate From €10.72 to €13.56 gross per hour
You need: Customer contact
Strawberries, cherries, apples, asparagus: farms need extra hands at harvest time.
Estimate From €12.92 to €13.38 gross per hour
You need: Good physical condition
Hotels, restaurants, campsites and ski resorts recruit staff for the high season.
Estimate From €10.72 to €13.56 gross per hour
You need: Languages, Customer contact
In November and December, shops, warehouses and Christmas markets need extra staff.
Estimate From €10.72 to €13.56 gross per hour
You need: Customer contact
School pick-ups, Wednesdays, evenings: many parents are looking for someone they can trust.
Estimate not available
You need: Teaching, Customer contact
Walk a dog, feed a cat during the holidays, or host a pet at your home for a few days.
Estimate not available
You need: Love of animals
Help a pupil in a subject you know well, at their home or by video call.
Estimate not available
You need: Teaching, Languages
Assemble a piece of furniture, put up a shelf, change a handle: small jobs that are in high demand.
Estimate not available
You need: DIY, DIY tools
Mowing, hedge trimming, weeding: many people do not have time to look after their garden.
Estimate not available
You need: Gardening, Good physical condition, Car
A few hours a week in private homes, often with flexible hours.
Estimate From €15.26 to €16.16 gross per hour
You need: Nothing in particular
Carrying boxes, taking furniture apart, driving a rental van: a helping hand that is always in demand.
Estimate not available
You need: Good physical condition
Deliver meals or parcels by bike in cities, on hours you choose.
Estimate not available
You need: Good physical condition, Bike, Smartphone
A parking space or garage you do not use can be rented by the month, especially in town.
Estimate not available
You need: Parking or garage
Drill, pressure washer, trailer, camping gear: rent out what you rarely use.
Estimate not available
You need: Equipment to rent out
A spare room can host a student, a worker on assignment or travellers.
Estimate not available
You need: Customer contact, Spare room
Visit a shop or restaurant as an ordinary customer, then fill in a questionnaire about the welcome and the service.
Estimate not available
You need: Customer contact, Writing, Smartphone
Give your opinion on a website, an app or a product, from home, a few minutes at a time.
Estimate From $ US4 to $ US10 per test (payment)
You need: Computing, Computer
Appear in the background of a film, series or advert, often for a single day.
Estimate not available
You need: Nothing in particular
Write content for websites, product pages and newsletters, or translate documents.
Estimate not available
You need: Languages, Writing, Computing, Computer
Logos, social media visuals and short video edits for shops and content creators.
Estimate not available
You need: Creative, Computing, Computer
Jewellery, candles, sewing, ceramics: sell your creations online or at Christmas markets.
Estimate not available
You need: Creative, Craft supplies
Artificial intelligence assistants can do part of the work: writing, answering customers, monitoring. Enough to launch a small online service.
Estimate not available
You need: Computing, Computer
Look after children during school holidays or on Wednesdays: games, outings and group life.
Estimate Up to €44.02 per day (maximum volunteer allowance)
You need: Leading groups, Customer contact
Photograph family celebrations, association or company events, then deliver a retouched selection.
Estimate not available
You need: Photography, Customer contact, Camera, Computer
Is your car often parked and unused? List it for rent on a specialised platform, insurance included.
Estimate not available
You need: Car, Smartphone
Keep someone company, do the shopping, go with them to an appointment or for a walk: real support for older people and their families.
Estimate not available
You need: Customer contact
Welcome and guide visitors at trade fairs, conferences, concerts or sports events, often for one or two days.
Estimate From €10.72 to €13.56 gross per hour
You need: Customer contact, Languages
Drive a car from one place to another for a rental company, a garage or someone who has just bought it.
Estimate not available
You need: Customer contact, Driving licence, Smartphone
Submit your photos to stock image libraries: each time a customer downloads one, you earn a small amount.
Estimate not available
You need: Photography, Smartphone, Computer
Handle quotes, invoices, diaries and letters for tradespeople, freelancers and small businesses, from home.
Estimate not available
You need: Organisation and office software, Computing, Computer
Referee football, basketball, handball or other matches at weekends, with an allowance for each game.
Estimate Up to €44.02 per day (maximum volunteer allowance)
You need: Good knowledge of a sport
Comparing, rating and correcting AI answers in French, remotely, for platforms such as Outlier or Mindrift.
Estimate not available
You need: Writing, Computing, Computer
Judging whether search engine results or AI answers are useful and reliable, a few hours a week.
Estimate not available
You need: Languages, Computing, Computer, Smartphone
Small, simple tasks on Clickworker: sorting images, checking texts, answering short questionnaires.
Estimate not available
You need: Computer
Typing up short audio clips, paid per audio hour, on platforms such as TranscribeMe.
Estimate From $ US15 to $ US22 per audio hour (payment)
You need: Languages, Writing, Computer
Conversation or French as a foreign language lessons by video, for adults around the world, on Preply or italki.
Estimate not available
You need: Languages, Teaching, Computer
Printable templates, planners, spreadsheets or PDF guides, sold as downloads on Gumroad, Payhip or Etsy.
Estimate not available
You need: Creative, Computing, Computer
Publishing your designs on Redbubble or Spreadshirt, which print and ship T-shirts, mugs and posters for each order.
Estimate not available
You need: Creative, Computer
A novel, practical guide or cookbook published as an e-book or in print on Amazon KDP and Kobo Writing Life.
Estimate not available
You need: Writing, Computer
Recording a video course on a subject you know well and selling it on Udemy or your own page.
Estimate not available
You need: Teaching, Computing, Computer, Good microphone
Writing useful guides and comparisons on a topic, with links to shops that pay a commission.
Estimate not available
You need: Writing, Computing, Computer
Sending a weekly newsletter on a hobby or area of expertise, with a paid option on Substack.
Estimate not available
You need: Writing, Computer
Regularly publishing videos on a specific topic and earning a share of ad revenue once the channel is eligible.
Estimate not available
You need: Creative, Computing, Smartphone, Computer, Good microphone
Posting, answering messages and running the Facebook, Instagram or LinkedIn pages of shops and freelancers.
Estimate On average €288 per day (rate charged)
You need: Writing, Creative, Computer, Smartphone
Setting up simple websites for craftspeople, charities or freelancers with WordPress, Wix or a similar tool.
Estimate On average €369 per day (rate charged)
You need: Computing, Creative, Computer
Recording your voice for company videos, online ads, audiobooks or phone greetings.
Estimate not available
You need: Languages, Leading groups, Computer, Good microphone
Selling your own course summaries and revision notes on Stuvia, to other students.
Estimate not available
You need: Writing, Computer
Answering customers' calls, emails or messages from home, as an employee of a company or a contact centre.
Estimate From €13.56 gross per hour
You need: Customer contact, Computer
Testing websites and apps before release and reporting errors, paid per test or per bug found.
Estimate From €10 to €50 per test (payment)
You need: Computing, Computer, Smartphone
Offering instrumentals to rappers and singers, or music for videos, on BeatStars or stock audio sites.
Estimate not available
You need: Creative, Computer, Craft supplies
Designing useful or decorative objects in 3D and selling the files to 3D printer owners on Cults.
Estimate not available
You need: Creative, Computing, Computer
Creating subtitles for videos made by companies, trainers or associations, including for deaf and hard-of-hearing viewers.
Estimate not available
You need: Languages, Writing, Computer
Correcting the spelling, grammar and clarity of students' theses and dissertations, with Scribbr.
Estimate From €20 to €30 per hour (payment)
You need: Writing, Languages, Computer
Remotely checking comments, posts and messages in an online community on behalf of brands, with ModSquad.
Estimate not available
You need: Languages, Computing, Computer
Helping applicants present their background clearly, with a readable CV and a cover letter tailored to each job.
Estimate not available
You need: Writing, Organisation and office software, Computer
Cleaning up and editing podcasters' recordings: cutting silences, balancing voices, adding the intro and outro.
Estimate not available
You need: Computing, Creative, Computer