Haven't yet figured-out how to provide raindrops and snowflakes of consistent sizes and make 'em appear just where and when I want 'em
I don't know what you could do for snowflakes, but you could shoot through a constant stream of water falling from a faucet to a tank. It won't be the same as a drop, but I bet you could get the stream pretty thin.
Then all you have to do is hit it! <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />
