I think robotics could be a lot of fun, if he hasn't explored that yet. I know a lot of kids get into building their own remote-control vehicles, which gets essentially into hot-rodding on the high end. Rocketry? How about a DSLR camera with a prime lens or two? I dunno. I'd be interested to hear what you pick.

Striving to increase my rate of flow, and fight forum gloopiness. sick