Buy 365 near-identical, solid color shirts that range through the entire color spectrum in a loop. It will appear as though you wear the same color shirt every day, but in photos from previous months you’ll be wearing a completely different color.
Animal abusers should have a registry like sex offenders, that way you can check before selling pets to them and also you can trash their house.
An app that connects people who need to use the bathroom with people in the area willing to let a person take a shit in their bathroom for 5 bucks.
A tv show where 100 people with dwarfism are raised away from civilization, unaware that dwarfism is a real thing, and are then suddenly released into civilization.
Easter should be like Halloween but for the day time. Instead of kids turning up dressed as monsters and ghouls, they could turn up dressed as bunnies, chickens and other cute stuff in exchange for chocolate eggs.