At the heart of every small shop is a multipurpose workbench. Build this workbench with tons of storage space underneath. While ours is configured for lumber storage, you can put cabinet doors on the front and store tools and materials. For our 8-ft. long bench, we built four 2x4 frames; that left about 27 in. between them. This spacing provides plenty of support for the double 3/4-in. plywood top and long lengths of lumber underneath.