I would probably do a few things - build a go-kart (why not?), learn a new computer skill, go for rides on my motorcycle, random red-eye flight for a weekend, a

I would probably do a few things - build a go-kart (why not?), learn a new computer skill, go for rides on my motorcycle, random red-eye flight for a weekend, act on one of the ten startup ideas continually floating around in my head :D