chainwhip (a bar with chains attached)
truing stand (a fork with extra legs welded on to fit rear hubs, welded to a base with supports for dial indicators)
tensiometer (dial readout gauge + spring clip + a base to put it together)
headset press (aka. threaded rod, nuts and washers)
crown race setters (well, they're just pipe nipples.)
headset remover (the current one is electrical conduit with 3 slots. Don't bother with softer materials.)
spoke driver (swiveling offset screwdriver with the end ground)