Step 8: Enjoy... then refine.
I think this has a lot of potential though... if I had used ice and salt instead of just the freezer, I'm sure it would have set faster and better. The paddles probably also need to be thicker to keep a lot of ice crystals from forming, but it's hard to tell from this batch. Finally, I think I would prefer the vanilla instead of chocolate (a little chocolate syrup really helped the flavoring though).
Overall, this was a pretty satisfying project, and I think the more someone did this, the better results they could get. This project is also entered in the rechargable battery contest, so if you enjoyed it please remember to vote. And, if you guys try this, please drop some pics and let me know how it turned out for you!