Don and Sharon Snailski go sledding, but it's all a sham! The sled is a custom-built double-wide wooden toboggan, but it unfortunately never saw any real sledding action.
I built a custom snow particle system for this spot, where snow would melt, stick, or blow away depending on whether the surface was designated "hot" or "cold." And then I never used it, though I did create all the CG snow blowing around in the spot, since it was actually quite a lovely day.
I also got to "knit" imaginary hats and gloves for a couple of snails. It's hard to explain to people what I do.