True story: upon playing my first computer FPS, I thought that the default WASD movement keys were a mistake so I switched changed them to the arrows. Turns out, I'm an idiot.
My tab key would keep falling off after (Ironically) loosing the tabs that keep it attached, so I filed down an edge of my inset key and popped it in.
"After a series of accidents I'll not go into, a couple of my computer keys were broken. A little card stock, and I saved some money on replacing the keyboard."
User foxhead128 has a habit of Alt+Tabbing a lot, so their Tab key wore out pretty quickly. Nothing a bit of Scotch tape couldn't fix.