because_curious

Let a cat occasionally jump after your cursor when you reach bottom of the screen.

Make a language test out of any website in 2 simple steps: select text and right click "Make a test".

Sort walmart.com by unit price.

Replace all prices with the time you need to work to earn that much. Find real value of stuff you buy!

Make lyricstraining.com require typing characters with diacritics. In other words the site will require 'könnte' when the lyrics has 'könnte' and typing 'konnte' will be treated like a mistake.