As long as we are dreaming, how about a leaf shredding vacuum. Probably have to be something along the lines of a pull-behind cart.
Honestly, this is one application that the PT does not seem very well suited for though. The front attach and articulating design would make it very hard to figure out a way to blow the leaves back to a pull-behind cart, and anything that you rigged up to hold the leaves in front would either be too small to be useful or restrict vision too badly. But hey, I know how much some of you guys love a challenge!