The first of three, I like to do just about anything requiring lots of assembly, hands-on, creative thinking, and technological advancement (or just plain overkill or gadgetizing) of devices or processes. My favorite thing to do is build stuff. Build what? Anything. With any materials available. Example (most recently): I made a store quality cabinet from the plywood off some old shipping pallets, complete with refabricated tamper-proof hinges and locks.