I have a bad habit of working to fast and losing my temper alot. I lose track of tools all the time working on something. I'll lay the damn thing down and go back to the same spot and it's GONE! lol. My g/f sometimes keeps me company when i'm doing something ONLY if i promise not to cuss and yell lol that never works out cause cussing and yelling is part of working on the cars. My g/f even asked me once why do you work on cars if it pisses you off so much i couldn't answer it. I know you all have done this too, drop a bolt and you can not find it. It's like there's a black hole under my car but only when i'm holding a bolt i don't have a replacement for. And you can bet your ass i'm going to drop it, hear it clank around for a few sec.'s and never find it again.