When I have to work on small things I work in the bottom of a deep
baking pan. That doesn't always keep the gremlins from making things
jump out of the pan but it takes a very strong gremlin to lift it
over the edge.
One of the problems most of us have is that we provide all sorts of
stuff on the floor for those bad trolls and gremlins to hide in
until the item drops.
When I drop silver or gold pieces on the floor I do a quick sweep,
then put the stuff in a gold pan with some water and a drop of soap
then pan for the silver or gold. Thats a great way to recover silver
and gold filing that have fallen on a hard floor surface.
One way to spot things or the floor is to turn off the lights and
lay a flashlight on the floor. Rotate the beam. Don't be surprised by
all the stuff you will see on a supposed clean floor.