I'd love to score one of these, here's the homemade one made ages ago and killed somewhat recently:
(ah, BBCode tags bring back memories!)
It doesn't output anything anymore, the diodes are fine, I'm thinking the switching IC died.
Excuse the crudity of the construction, I didn't have time to build it to scale or to paint it!
Some wires and things (like screws) are missing since I've stolen some parts out of it. There's a fan under the mainboard to push cool air into the unit and the case had vents on the sides of the top and bottom
Fingers crossed I'll get selected, thanks Dave!