One of the problems I've run into is what to do with all those damn minifigures you have laying around. Sure they're fun to display all over the office or house. But I'm married and believe it or not my wife doens't really want all those mini's all over the house. Plus I'm sure one of her cats will make off with them and put them in the heating vents.
I've found that the clear tray tackle boxes work exceptionally well for this duty.