I’ve been following the MAKE Magazine vidcast for a while, and while it’s usually pretty pedestrian, they do occasionally showcase some real gems. Recently they covered both throwies and blinky bugs.
It’s frustrating because I actually do have a cell holder off a motherboard, but the 3V lithium cell that came with it is down to 0.86V, so won’t work. :( I’ll have to get a new one… or more likely just some AAs or AAAs… and some guitar string.