Do you remember Fuzzy Felt ?
I used to love it, and I had the light bulb above head moment. Rex has to learn the love of fuzzy felt too. After trying to figure out the mechanics of fuzzy felt. During this process I have only just found out that felt does not have magical sticking properties to other felt, childhood myth. But after testing and Rex eating Velcro dots which came off the back of the original 1st testing of felt bits. I found that felt sticks very nicely to carpet tiles that we have on the conservatory floor. We had some spares, so cut them to fit frame. Cut some plywood to stick carpet tiles onto and stuck it in a frame. There you have it, Rex can create a masterpiece in felt every day, that's if most of it does not end up being eaten.