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