In my second-story apartment, I do a lot of brush-painting as I have no place for an airbrush (when I use a "rattle-can," I go outside). I keep a lot of different-sized clean plastic containers around the workbench for keeping parts and sub-assemblies clean after painting. The tiniest parts go into one of those 7-day pill containers; somewhat larger parts go into a 4-compartment dip container rescued from my friend's little boy's birthday party. (The individual compartments are great; I don't have to keep track of half-a-dozen 35mm film cannisters.) Still larger assemblies are placed under anything from a small plastic flower pot to a motel-room ice bucket. Believe it or not, one of the handiest things I've used is a hospital vomit tray (clean, of course!) that a respiratory therapist friend of mine once gave me! Its unusual kidney shape is great for fitting around large or awkwardly-shaped subassemblies. I don't keep a super-clean house, so my apartment is not only dusty, but there's a lot of cat hair, so I definitely need all those containers! (Incidentally, when you cover a fresh paint job with a container, prop up one end with a small piece of wood, a small book, or whatever, for ventilation.)