another good one with pvc pipe is to take a piece of 4" x4' pipe glue a joint on that has a 45 entering (kind of y shaped), then glue a cap on the bottom. Also you can drill a couple of holes in the top to thread a rope through to make a hanger. Put it up about 3' off the ground to keep coons out. Dont glue the top cap on like I did with my first one. Made it hard to fill. Can be strapped to a tree or fence post critters eat out of the Y branch that is left open.