Ooooh. Good Question! I like the idea of a forest scene. Maybe a small stream in the distance. I'd like there to be a large tree with minimal leaves and lots of branches with space to hang framed family photos (family tree) Not an original idea of mine, but one that I find very interesting.
I also like the idea of painting inspirational quotes (or use the wall decals they have now) ALL over the house. It's my theory that with that many positive messages I would be forced to look at everyday, how could I get cranky? =)