In the comics world, a little kid like Calvin can churn out a small army of miniature snowmen in a single afternoon. In reality, it takes a lot longer, and you'll end up with a pair of freezing soaking wet gloves well before you're finished. But if you have access to a 3D printer, you can make the process of building a tiny snowman army a lot easier with this simple plastic mould.
The 3D model is available from MakerBot's Thingiverse as a free download, but you'll have to either make it yourself on a 3D printer, or find an online service willing to do it for you. But once it's in your hands, using the mould is as easy as stuffing both sides with snow, scraping off the excess, and sandwiching the two halves together. In no time flat you'll have a formidable battalion of tiny snowmen at your disposal, and gloves that are dry and warm enough to keep the feeling in your fingers. [MakerBot Thingiverse via Nerd Approved]