[kugelblitz]

How about going freelance contracting / consulting? They will probably appreciate your experience as CTO and also your understanding of how to push a product forward.

I've only had side-projects, but one of them was big enough to pay the bills during the best of times. Currently it has hit a speed bump (more visitors, but less orders) so I'm just running it passively on the side, generating a little bit of profit, while I do freelancing.