i use plastic flower pot bottoms and cut a big hole in the top. the hole is big enough so that the snake has no chance of ever getting stuck. i also use plastic mini kitty litter tubs and cut out an entrance at the top. again i make sure that the entrance is big enough so that the bp has no chance of ever getting stuck. they love them and i love them because they are lighter and easier to clean than clay pots or clay pot bottoms.