I heard about making 'leather' from SCOBYs, so I made this cup!
I put a paper towel, then plastic wrap over the bottom of a beaker, then rinsed a SCOBY and pressed it over the beaker. I let it dry and then added another, for a total of 3 SCOBYs in thickness. It's pretty funny feeling, sticky and very water-absorbent.
The first two tries failed, as I didn't think to line the beaker with removable stuff. The SCOBY stuck to the glass. So I used plastic wrap, but the was difficult to slip off. The paper towel/plastic wrap worked well!
I am going to try to figure out a way to tan or seal it and use it on my desk as an interesting paperclip holder!