In response to the comment about using Shiva paintsticks to do rubbings over hand carved stamps, I first discussed this technique several months ago. I don't know for sure what led me to do it originally, probably I read something about there being rubbing plates for Shivas and I thought of my stamps.
Here are some other ones I've done, mostly with this stamp:
and the pieces using fabrics treated this way:
As you can see, I especially like using the metallic/iridescent one to add more visual texture to hand dyed fabric (in these cases, silks). I varied the color from place to place, and was pretty casual about where the stamp was placed.
I put the stamp textured side up on my work surface, lay the fabric on top (for the small pieces in the previous post, I actually wrapped the fabric around the stamp to hold it steady), then rubbed. Sometimes I used light pressure, others I pushed harder. Sometimes I switch colors in the middle of the piece.
Usually when I dye fabric, I use low water immersion techniques to maximize the texture, and I almost always put the fabric through more than one dye bath. But it can still come out too plain for me. Using Shivas to rub on an extra texture is a great option to have.