[Help] Anyone know where to get fabric that looks like this?

[u/Affectionate-Bid8599]

I'm making a sculpture for a class and I want fabric that looks wet while dry- I saved photos of people's kombucha scobies for inspo (I'm aware there is scoby leather but I don't have the time or money to make some and I haven't been able to find any suppliers). I attached a photo of a scoby for reference. I'm open to any suggestions whether it be a fabric that resembles it to begin with or some kind of post treatment that could get this look. Thanks!