Electronic torx bits with the darned part in the middle still there.
Electric drill (plug in) with lots of amps!
A magnet pick up thingy
But I'd have to say a good flashlight/shop light. Nothing's as annoying as when you can get light on a part you're trying to work on!
Last edited by Natesriv; 03-14-2017 at 03:52 PM.