Go with drizz's idea. My kids like to whittle on the wood with my hobbie knife so I cant let them around the stuff but me & a friend get together in his basement & usualy build 2 of the same thing or what ever we want. Not only do I then enjoy building but the fellowship of having someone around while I'm doing it. When one of us runs into something we thing might be a problem it's great have 2 minds there thinking about it.