Birdhouse, wine corks, tree bark, or cedar planks (the damaged ones are VERY ceahp at home improvement or lumber yards) , sticks fromt he yard, craft store birdhouse kit (the cheap ones, Dollar Store has them too).... just split and use some good glue... seal and hang outside.... very whimsical, DIY crat idea, if you split the corks, this would work for boy scouts, or younger children.... recycle, upcycle green craft idea!
