Disposable foam trays (not!)

Foam trays like those that meat comes in can be useful, so keep one or two on hand. Wash them thoroughly with hot water and soap, then make your own pop dots to glue behind figures to give depth to craft projects, use them to mix and hold homemade glue or paints or clay, use them for small trays to hold potting plants or other small items that you want to move all at one time. It's probably best to not use them for food items.