I don't know anyone who hasn't dropped beads on the floor (carpet) where they're working (in front of the TV). There are probably retail items one can use, but by necessity I quickly picked up a toothpick (or Q-tip) and put a small wad of Blu Tack on the end. Blu Tack can be bought at most stores and is used to attach posters, etc. to walls and then they can be removed - no mess.
I have always used a knee high stocking taped or rubber banded to my vacume cleaner hose then just pull it off and pour out.
Spilling is one thing, sorting afterwards is tedious. These are times I call it bead soup and then create something unique.