Master Magnetics Magnetic Cup Caddy

The simplest thing on this list, and probably the one you’ll use most often. A coffee on the bench ends up knocked over, full of sawdust or leaving a ring on the thing you just finished. Stick this on the side of the toolbox or a machine and the cup lives there instead. When the coffee’s gone, it’s a holder for the spray can, the marker and the pencil you keep losing.

Pro tip Put it on a flat, clean patch of steel. A magnet grips hardest on flat, bare metal — on a curved panel or over a sticker it holds much less, especially on a machine that vibrates.