I made a spinning wheel out of PVC pipe, an old bicycle rim, clay, string, and a knitting needle. It was easy, and it works decently! Here's a video of it spinning:
As you can see, it wobbles, and it's not as quiet as I'd like it to be, but I don't care!
It spins way faster then a drop spindle. I'm going to make another one, just to perfect the design. Then I want to make one with a treadle & bobbin/flyer.
So I want to start doing interviews of shop owners on etsy! :] Are there any questions you'd like me to ask? Or anyone who you think I should interview?