Prolific Academic Studies
Take part in university-run behavioral and psychology studies for guaranteed minimum hourly pay.
26 of 174 published ideas, scored the same way as the rest
How this set is decided: the playbook’s own highest itemised startup cost is under €95
A hundred is enough to buy tools, not stock. That single fact shapes the whole set: microtasks, freelance work and content make up most of it, because what a small budget actually buys is a subscription, a domain, a basic piece of kit — the things that unlock work you then do yourself.
It is not a bargain-basement list. The median earnings ceiling here sits close to the site median, well above the "no experience" set, because a small budget is a much weaker constraint than a missing skill. Most of what a hundred excludes is inventory, and inventory is not where the ceiling comes from.
The figure is the top of the playbook’s own itemised startup cost, not the cheapest possible corner of it. An idea whose realistic range runs from twenty to four hundred is not on this page, even though you could technically begin it for twenty. We would rather the page be smaller and the number mean what it says.
Evidence is the weak point worth knowing about: only three of these carry a verified grade. Cheap-to-start ideas attract the kind of coverage that is written to sell a course rather than to report a result, so check the grade on each one before you plan around its numbers.
Take part in university-run behavioral and psychology studies for guaranteed minimum hourly pay.
Get paid to break AI models — extract harmful outputs, bypass safety filters, find factual or security flaws.
A free account unlocks every match, every playbook, and re-scores all 26 ideas against your budget, your hours and your country.
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