I loooove me some Dollar Tree. Almost as much as Hobby Lobby in fact! I am always finding great things there on the cheap. If I have supplies to buy I ALWAYS check there first.
One weekend I hit the Dollar Tree looking for nothing in particular and ended up with an 11x14 wooden frame (just for a buck, are you serious!?) and a wooden plaque with a bird painted on it.
This is what they turned into: