I also was able to find a 4-pack of some small plastic bowls at walmart and I was able to cut a little opening in 2 of them and replace his current hides with these ones. I made sure to use a nail file to sand down the edges of the cuts and also that little pokey bump on the bottom of plastic bowls. as soon as I replaces his hides last night he went right into one of the new homemade plastic bowl hides.