I was planning on cutting a hole in a plastic bin to use for a nestbox, but I spotted these at Target yesterday:
http://www.target.com/Durabilt-Mult...=k:storage bins,p_36:$0-$24,tgt_3:Homz&page=1
The bins have a nice, snug fitting lid. The system is modular, so you could even stack a couple for a double decker nest. There's a hole in the back of the bin already so you could easily use a screw and washer to attach the bin to the wall and get it off the floor, if you wanted to. I figure the plastic will be very easy to keep clean.
http://www.target.com/Durabilt-Mult...=k:storage bins,p_36:$0-$24,tgt_3:Homz&page=1
The bins have a nice, snug fitting lid. The system is modular, so you could even stack a couple for a double decker nest. There's a hole in the back of the bin already so you could easily use a screw and washer to attach the bin to the wall and get it off the floor, if you wanted to. I figure the plastic will be very easy to keep clean.