We got two additions to our family yesterday. Penelope and Amelia were once two humble lab mice who were rescued from death by snake by my wife. While I initially though the snake option was better, they are pretty darn entertaining (except when they get a bit too excited and pee on you).
I have been getting a treehouse itch lately and while tromping through a patch of urban wilderness yesterday discovered several large trees worthy of such an undertaking. Laura says that I have to build her some shelves first though.