Different companies sell magnetic parts trays - they reduce the possibility (probability?) of losing small parts.
Magnetic parts trays are easy to make. I use little cans like the ones used to package sardines, smoked fish, herrings, etc. They come in different shapes and sizes. Use JB Weld to bond a couple of super magnets (Amazon, Lee Valley) to the bottom of the can. My workbench has a steel top. The can stays put and the parts are secure inside.
Magnetic parts trays are easy to make. I use little cans like the ones used to package sardines, smoked fish, herrings, etc. They come in different shapes and sizes. Use JB Weld to bond a couple of super magnets (Amazon, Lee Valley) to the bottom of the can. My workbench has a steel top. The can stays put and the parts are secure inside.