Get a hide that is small enough hides can be made of cheap simple items around the house....I use cool whip or butter tubs with a hole cut in it....you can also you small colored rubbermaid tubs of the appropriate size (it will cost you $1.00). Also, to reduce stress, you can crumble up newspaper into balls and put it in the enclosure. This will give the bp some added security, but an appropriate sized hide will work the best.