I just read this article on burial pods with your choice of tree on top:
http://www.boredpanda.com/biodegradable-burial-pod-memory-forest-capsula-mundi/
Instead of being in a cemetery you are part of a memory forest instead. Lovely idea.
I've wanted this for a long time, but I thought more of being cremated and my ashes buried around a tree. I like this idea better. My other idea was to have my body made into a stew and all my friends would eat it. I think most of my friends wouldn't do it, though. We'd have to trick them and tell them afterwards. I doubt they would remember me warmly if I tricked them into cannibalism, though.
Have any of you thought about what you want done with your body when you die?