These folks make great bird houses. I love bird houses and bird feeders, and find putting them up and maintaining them the perfect weekend project (particularly with my daughter). So, a few years ago, I installed a huge Lazy Hill Purple Martin Bird House. For those with a little less space, I like this smaller one, The Flat House. You can check out all of Lazy Hill's houses here (and then find a place to buy them elsewhere as they're only to the trade).