CAPTCHA, the game!
If you haven’t been confronted enough lately by Google’s annoying CAPTCHA system (where they pretend you’re proving you’re human but you’re actually giving Google free labor to use your human intelligence to compensate for the failures of machine intelligence) then you’re in luck! The free online game “I Am Not a Robot” uses a CAPTCHA-like system for you to to identify the pareidolia illusion from photos of everyday objects. Get some.