Over the coarse of a few projects, you can accumulate quite a collection of small screws, nails, and other small parts. There are several ways you can store these items; baby food jars, small paper bags, soup cans, or even a multi-drawer small parts organizer. The trick is to be able to quickly see what is inside each container without having to waste time searching. Using your hot glue gun, attach a sample of the small piece on the outside of the container. This will give you a quick, visual reminder of what's inside.
When you are working in an area where a washer or nut can drop into a delicate assembly or be difficult to retrieve, use dental floss. Fasten one end of a long piece of floss to the part and the other end to something solid. When the parts are finally installed, the dental floss can either be cut off or, as in the case of a nut, it will come right off because it will be cut by the threading action.