This idea has lots of potential! Thanks! This guy is actually pretty easy on fabrics as he doesn't really knead anymore, just sheds (which I guess technically adds to the fabric, right?).
I did a test run through the washer. Mines a front loader and therefore much easier on fabrics than a top loader with agitator and I put it in a lingerie bag. A lot of the silver wore off the plastic! I did notice that the silver was just on one side of the plastic, however, which makes me wonder if I did sew it and sewed it with the silver side towards the fabric if it would not wash off. Hmmmmm.