Snowmen are great and all, but snow forts? And snow castles? Even better!
While it's still a lot of work making a structure out of snow (make sure to get a few of these so everyone can help with the brickmaking) the sturdiness and (relative) precision these brick-makers provide allow for more deliberate and sturdy creations.
And when it turns to summer? Use them at the beach for the ultimate designer sand fort. :)