Disassembling your eyeglasses, taking apart your cellphone to remove that bit of lint behind the screen that keeps mocking you, and a few other activities you regret once those tiny, irreplaceable parts roll off your desk and fly into the shag carpet...You need regret nothing, nothing I say!Just ensure you own a well-designed, stable, and downright useful Bitty Parts Tray.Google Sketchup File loaded