Best for quick laughs.
For five-minute fun:
Pointer Pointer — the genre-defining single-purpose joke. Move your cursor; a photo of a person pointing at exactly that spot appears. Three minutes of testing the database; tab closed; you're back to work.
Eelslap — drag your mouse to slap a man with a fish. The funniest URL on the internet. We've explained this in three previous landings; the joke does not get less funny.
Cat Bounce — cat GIFs that fall, jump, and bounce when clicked. Fifteen seconds of work for ninety seconds of laughs.
Find The Invisible Cow — your speakers say "cow" louder as you move toward where the invisible cow is hidden. Three minutes of confusion, a small triumph at the end.
The Password Game — make a password that satisfies escalating absurd rules. By rule 17 you'll need a sacrifice. By rule 25 you'll have abandoned hope.
For more in this register, the Useless Websites and Funny Websites categories are the deep dive.