I wish I could claim that I'd spent the time required to cobble the legs together out of several varieties of Evergreen sheet, rod and tube, but the truth is, they came that way. For the first ten~twelve years I worked at the Texas Talking Book program, we duplicated audio files onto cassettes for duplication. Serving about 15 to 20 thousand patrons, we went through
a lot of blank cassettes, and they came packed in boxes of a hundred, with these styrene retainers. Since they were obviously styrene, I started saving them...
DSCF1134 by
VileDr.Yo, on Flickr
The style of the retainers varied between manufacturers, and most of what I have are plain soft black strips with no 'detail', but these in particular were around for awhile, and they do have a measure of relief on them that has obvious applications.

The feet are just the tips of the strips, wormed out with a small rattail file.
DSCF1134 by
VileDr.Yo, on Flickr
Power is mostly a combination of electric motors and cables. (There may be some bicycle chains in there somewhere, but you won't see them-buildin the legs is a bit time intensive, and I'm already dreading adding more rivets. These old RPM kits are wonderfully detailed, really tiny, and pretty delicate. More later-got to got get another propane tank-we are looking at another streak of snow & ice, and while our grid here is in better shape than Texas, the number of trees close to powerlines here in the Commonwealth tends to negate that advantage. I'll try to take some snaps of the dead limbs I've been clearing since last week. (In the appropriate forum thread, that is.

)