I bought a large (very large) tupperware bowl the other day at Wal-Mart (it had a defect and was half off) for 3 bucks. Took it him and did the same thing from the sticky. I used an exacto and a lighter to smooth out the cut too! I had to spray paint it black because it was clear, but yay for hides that fit. This one actually has some room in it for Prada to grow. She was hanging out all of the sides of the last one. At least I can re-use it for my boy when he gets bigger. Those stickys sure are handy!