My nomination for best product of the year (and for all I know it's been around forever and I just saw it for the first time the other day) is the fake, carvable pumpkin.
It's lightweight. It's not messy. It's imperfectly shaped. Best of all, if you forget it outside until mid-November (uh... not that I do this...) it doesn't turn into a messy glob of greenish/blue pumpkin pulp that you have to scrape off your porch.
I'm getting two.