I keep most of them in my tool tower (15-20, I suppose), one around my TS, one or two always find therir way to the bench, one in the truck, and until very recently, a 6 footer on my keychain, but it broke ;(
No matter where I put 'em, there's always the one or two that seem to be in the most unusual places, like on my dresser, on the vanity in the master bath, on the kitchen counter next to the wall phone (this is s very common unusual place!), between couch cushions and (cough, cough) on my night stand! All of 'em find their way back in the tool tower in my garage shop (eventually), which by the way, is never straightened out and always dirty (no matter how many times I sweep & blow things off) - the anguish of no DC (yet).