Your wish can now be seen (or at the least stomped on) by millions. Confetti makers are adding your wish to a piece of confetti via online submissions. I went with a very generic "Happy New Year 2008!"
At garbagescout.com, you can find out what interesting junk is currently cluttering the streets of New York. The locations/pictures are supposed to be potentially useful stuff and visitors are encouraged to go pickup whatever they can re-use.