Spare Time Gizmos is a little home-run business that sells kits to make several interesting projects.

A reproduction of the little Elf computer. Cecilia got to play with an original one once, says it's pretty cool. It allows you to program it using switches to set memory locations (Like they had to do back in the stone age).

There's also a DEC PDP-8 replica, which is pretty cool, and a stereo tube amplifier. Nice Stuff!