The other day I tried some natural surface rubbings on fabrics. I used leaf skeletons, wood, tree bark, a grass basket, and stone. It is a great way to create textures for use in fiber art work.
I like to rub with watercolor crayons. I have a couple brands that I like and use them interchangeably.
Peel the paper down aways so you can rub with the side of the crayon.
I picked up a couple of skeltonized leaves from outside to rub. I put them on a flat, hard surface, then taped my fabric down over the top so they wouldn't move, then rubbed, using several colors of crayons.
After rubbing, I iron the fabric to heat set the crayons.
Here is the one I made using a woven grass basket.
To make these fabrics permanent, after heat setting, I brush a watery mixture of acrylic medium and water over the design and let it dry thoroughly.