Budget: €0France · Belgium
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 France
You need: Smartphone
See how
Earn money with no investment
Starting with no upfront money is possible: many SmartExtraLab ideas mainly need time, a phone or a bike you already own. This page lists sheets marked as no investment, meaning a zero starting budget, with that filter already applied. You will find local services, one-off gigs, seasonal work or online activities that need no gear purchase on day one.
Figures on the sheets are indicative only and depend on demand where you live. If later you are ready to invest a little to launch an activity with AI agents, AI Agent Business Lab presents business ideas, including free starting points — the same referral the rest of this site uses for people willing to spend. Until then, stay on zero budget, read the rules guide for any declarations, and try one idea at a time.
63 ideas
Frequently asked questions
Does « no investment » mean everything is free?
It means a zero starting budget on our sheets: nothing you must buy to begin. Small costs may appear later (travel, phone). Read each sheet's budget note.
Why mention AI Agent Business Lab?
Only for people who later accept investing a little. On SmartExtraLab, the AIABL referral follows the same rule as elsewhere (ideas with a budget). It is not required for the zero-euro ideas on this page.
What about taxes?
It depends on country, amounts and status. The rules guide gives the general framework in France and Belgium, not personal advice.
Budget: €0France · Belgium
Pet sitting and dog walking
Walk a dog, feed a cat during the holidays, or host a pet at your home for a few days.
Estimate From €10 to €17 per 30-minute walk (price paid by the client) France
You need: Love of animals
See how
Budget: €0France · Belgium
Private tutoring and homework help
Help a pupil in a subject you know well, at their home or by video call.
Estimate From €22 to €25 per hour (price paid by the client) France
You need: Teaching, Languages
See how
Budget: €0France · Belgium
Help with house moves
Carrying boxes, taking furniture apart, driving a rental van: a helping hand that is always in demand.
Estimate not available France
You need: Good physical condition
See how
Budget: €0France · Belgium
Rent out your parking space or garage
A parking space or garage you do not use can be rented by the month, especially in town.
Estimate From €33 to €132 per month (rent received) France
You need: Parking or garage
See how
Budget: €0France · Belgium
Rent out your equipment (tools, trailer)
Drill, pressure washer, trailer, camping gear: rent out what you rarely use.
Estimate not available France
You need: Equipment to rent out
See how
Budget: €0France · Belgium
Mystery shopper
Visit a shop or restaurant as an ordinary customer, then fill in a questionnaire about the welcome and the service.
Estimate From €10 to €80 per assignment (payment) France
You need: Customer contact, Writing, Smartphone
See how
Budget: €0France · Belgium
Paid website tests and surveys
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) France
You need: Computing, Computer
See how
Budget: €0France · Belgium
Film, TV and advert extra
Appear in the background of a film, series or advert, often for a single day.
Estimate From €98.48 to €108.33 gross per day France
You need: Nothing in particular
See how
Budget: €0France · Belgium
Rent out your car to other people
Is your car often parked and unused? List it for rent on a specialised platform, insurance included.
Estimate not available France
You need: Car, Smartphone
See how
Budget: €0France · Belgium
Companionship and help for older people
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 From €12.31 gross per hour France
You need: Customer contact
See how
Budget: €0France · Belgium
Event host or hostess
Welcome and guide visitors at trade fairs, conferences, concerts or sports events, often for one or two days.
Estimate From €12.31 gross per hour France
You need: Customer contact, Languages
See how
Budget: €0France · Belgium
Sell your photos on stock image sites
Submit your photos to stock image libraries: each time a customer downloads one, you earn a small amount.
Estimate not available France
You need: Photography, Smartphone, Computer
See how
Budget: €0France · Belgium
Referee for amateur matches
Referee football, basketball, handball or other matches at weekends, with an allowance for each game.
Estimate not available France
You need: Good knowledge of a sport
See how
Budget: €0France · Belgium
Online microtasks
Small, simple tasks on Clickworker: sorting images, checking texts, answering short questionnaires.
Estimate not available France
You need: Computer
See how
Budget: €0France · Belgium
Selling digital products
Printable templates, planners, spreadsheets or PDF guides, sold as downloads on Gumroad, Payhip or Etsy.
Estimate not available France
You need: Creative, Computing, Computer
See how
Budget: €0France · Belgium
Designs on T-shirts and goods
Publishing your designs on Redbubble or Spreadshirt, which print and ship T-shirts, mugs and posters for each order.
Estimate not available France
You need: Creative, Computer
See how
Budget: €0France · Belgium
Paid newsletter
Sending a weekly newsletter on a hobby or area of expertise, with a paid option on Substack.
Estimate not available France
You need: Writing, Computer
See how
Budget: €0France · Belgium
Selling your revision notes
Selling your own course summaries and revision notes on Stuvia, to other students.
Estimate not available France
You need: Writing, Computer
See how
Budget: €0France · Belgium
Hunting app bugs
Testing websites and apps before release and reporting errors, paid per test or per bug found.
Estimate From €10 to €50 per test (payment) France
You need: Computing, Computer, Smartphone
See how
Budget: €0France · Belgium
Writing CVs and cover letters
Helping applicants present their background clearly, with a readable CV and a cover letter tailored to each job.
Estimate From €50 to €80 per assignment (rate charged) France
You need: Writing, Organisation and office software, Computer
See how
Budget: €0France · Belgium
Remote IT help
Helping individuals fix a computer, printer or email problem by taking remote control, with their consent.
Estimate From €19 to €29 per assignment (price paid by the client) France
You need: Computing, Customer contact, Computer
See how
Budget: €0France · Belgium
Paid expert consultations
Sharing your experience of a job or an industry in short paid calls with investors or consultants, through GLG.
Estimate not available France
You need: Professional experience, Customer contact, Computer
See how
Budget: €0France · Belgium
Remote public letter writer
Writing or correcting letters, complaints, wedding speeches or tributes for individuals.
Estimate From €25 to €35 per assignment (rate charged) France
You need: Writing, Organisation and office software, Computer
See how
Budget: €0Belgium
Flexi-job in Belgium
Since 1 July 2026, flexi-jobs are open to almost every sector: a small job on top of your main job, tax-free up to a ceiling.
Estimate From €13.04 to €22.61 net per hour
You need: Customer contact
See how
Budget: €0France
Delivering groceries on your usual trips (co-transport)
On a trip you already make, pick up someone's shopping in store or at a drive-through and drop it at their home, for a few euros.
Estimate From €5 to €25 per assignment (payment)
You need: Car, Driving licence, Smartphone
See how
Budget: €0France · Belgium
Life model for drawing classes
Pose for drawing, painting or sculpture classes at art schools, municipal workshops or associations, often in 3-hour sessions.
Estimate From €23.13 gross per hour France
You need: Nothing in particular
See how
Budget: €0France · Belgium
Student jobs
Retail, catering, activity leading, logistics: many employers recruit students, especially in summer and at weekends.
Estimate From €12.31 gross per hour France
You need: Customer contact
See how
Budget: €0France · Belgium
Childminding and babysitting
School pick-ups, Wednesdays, evenings: many parents are looking for someone they can trust.
Estimate From €10.36 to €11.52 net per hour France
You need: Teaching, Customer contact
See how
Budget: €0France · Belgium
Gardening and lawn mowing
Mowing, hedge trimming, weeding: many people do not have time to look after their garden.
Estimate From €12.31 gross per hour France
You need: Gardening, Good physical condition, Car
See how
Budget: €0France · Belgium
Cleaning and ironing in people's homes
A few hours a week in private homes, often with flexible hours.
Estimate From €12.31 gross per hour France
You need: Nothing in particular
See how
Budget: €0France · Belgium
Freelance writing and translation
Write content for websites, product pages and newsletters, or translate documents.
Estimate From €214 to €372 per day (rate charged) France
You need: Languages, Writing, Computing, Computer
See how
Budget: €0France
Census officer for your town
For five to six weeks at the start of the year, help Insee and the town hall count the homes in a neighbourhood.
Estimate From €4.50 to €5 gross per household counted
You need: Customer contact, Good physical condition
See how
Budget: €0France · Belgium
Remote admin assistance
Handle quotes, invoices, diaries and letters for tradespeople, freelancers and small businesses, from home.
Estimate not available France
You need: Organisation and office software, Computing, Computer
See how
Budget: €0France · Belgium
Training artificial intelligence
Comparing, rating and correcting AI answers in French, remotely, for platforms such as Outlier or Mindrift.
Estimate Up to $ US25 per hour (payment) France
You need: Writing, Computing, Computer
See how
Budget: €0France · Belgium
Evaluating search results
Judging whether search engine results or AI answers are useful and reliable, a few hours a week.
Estimate On average €23 per hour (payment) France
You need: Languages, Computing, Computer, Smartphone
See how