In the last month I've happened across some funny effects pedals.
First up is a Univox Uniwah. This is a goofy wah/volume pedal that doesn't use a pot. Rather it modulates the inductor by it's location near a chunk of metal. It uses three "C" batteries, since the volume part of it is optical. Mine produces a noticeable 'clunk' in use because the inductor is loose. It's also a massive tone sucker. If you're offered one, don't really bother unless you just want some weird stuff around your house.
Second up is a Paraclete Productions "Wa-Vol" - a chrome private label version of the Foxx wah volume. This one doesn't work. I think it's a bad transistor, which are still available NOS from Small Bear. Once I get the parts, we'll see how it sounds.
Last up was a Ross "D/P Combination." A purple AC powered first generation Ross Phaser and Distortion pedal in one box. This one is pretty cool. The first generation phaser with "Intensity" knob is more usable than the later versions. It doesn't get all 'helicopter sounding' when you crank the knobs. Distortion is relatively low output, but sounds pretty good. I think I'll be swapping out the switches so I can true bypass it, and perhaps swap the order of the FX. Right now it's distortion into phase, and I think I'd like it to be the other way around.