I've kept too many gun parts...
Scoping guns today made me break out my various parts boxes. I found myself questioning the sanity of why I keep them.
Sights, pins, springs and such. Occasionally someone will need me to repair something, but pretty rare.
Shoe boxes full of revolver grips. Boxes marked "Rifle Scopes, Pistol Scopes, TC Grips and Forearms." Seriously, I wonder if there's a self help group out there.