I used Crayola Model Magic air-dry clay because the cordless phone and phone rest wouldn't come off of the back splash without a fight. I was afraid if I tried any harder, I'd crack the entire back piece! My plan was to cover the relatively flat plastic phone with clay and build a retro looking handset. The problem with this particular clay is that I should have read all of the information on the package prior to using it for this project. It turns out that the interpretation of "air dry" is subjective. After waiting for it to dry overnight, I discovered that it was still soft. After reading the package (better late than never), I noted that it says that it stays soft and can be used over and over! Yay! Only, not so much yay in this case. I'm not sure what air dry really means on this product, but the phone is still soft after two weeks!Using wire and pony beads, I made a frame for the handset.