The vacuum trick is about my only salvation these days! Several years back I bought a set of Dewalt 12 Volt cordless power tools which have proved to be an exceptional addition to the Home Maintenance and improvement scene. It came with a small hand-held vacuum cleaner, a little more robust then the average "Dustbuster", and has found me dozens of lost parts over the past several years. If something "pults" I take a quick look, and if nothing turns up I fire up the mini-vac, nine out of ten times what I'm looking for is in the small dust collector container once I've passed it around the area.
Cheers,
Lance