My friend writes a blog where he posts goofy links and stuff- I don't know WHERE he finds all this stuff- but he found this neat link where you can grow your own virtual tree. You water it and use hedge trimmers and stuff. It's cute, if you do it long enough they give you a virtual birdfeeder with little birdies.
It's a little commercially-oriented, I guess, but I don't care as long as I get my virtual birdies!
Just thought I'd pass it on