I recently decided to grow my own avocado tree. I saved a pit from a store-bought avocado and read up on how to get one to grow. While it won't produce it's own avocados (you need at least two trees in order for them to pollinate each other), it should still be cool just to grow my own tree from a seed.
So phase one is to soak the bottom in water for 3-4 weeks, changing the water every other day to prevent mold and bacteria from sprouting. After that, it should be ready to be planted in a pot and hang out in the house through the winter. We'll see how this goes. :-)