Heh, that'd be a fun rule for your kids: you can only use technology powered by energy you generated and stored. Here's a how-to guide for a simple hand-crank g

Heh, that'd be a fun rule for your kids: you can only use technology powered by energy you generated and stored. Here's a how-to guide for a simple hand-crank generator and directions to the library, have fun. Of course, that might also be a good way to wind up with the next David Hahn, but...well just keep an eye on them. Maybe set up some ground rules like, 'no hydrogen.'