if you have some 5 gal. bucket around lay them on their side cut part of one side off and they make realy nice nest boxes. i saw a vidio on utube of a guy who did that. also small wooden crates or baskets work realy well too. you can pick up some VERRY cheap at fleamarkets or thrift stores! you could even ask friends or family if thay have any laying around that they would like to get rid of.