I'd use something other than soy milk... Acually, you don't really even need milk if you have a nice food processor. :) You can make so many things with avocados! Flavor it with lemons, chocolate, peanut butter, bananas, other types of fruit, whatever! :) If you freeze it and process it, you can then flavor it and it will be like ice cream, which you can also do with bananas. :)
