I found a great deal on an ottoman on ebay - $20 + $30 shipping. It's a bit unusual, the shell has much more of a curve that the standard eames ottoman, and has shockmounts (?) on the base. The big selling point was that the base exactly matches the base on the chair, so they will appear as a set.
I like that it's a bit different, and I'm not going for historical accuracy, just a chair that I love!
The vinyl came in, and it looks like I ordered a bit too much, but better to be safe. It's so soft and lovely!!