These snowmen are a great Christmas craft project that would be great for kids to make. Simple instructions, no fussy cutting, and simple basic sewing make this a great last minute Christmas gift option as well.
More detailed instructions are also available on the Craftster.org forum they are listed under Stuffed Snowmen.
Crafty Tips:
Put some rice or beans in a zip-lock baggie to weight your snowman and to help it to stand on it's own. The baggie will help to keep the rice/beans in place and prevent them from working their way through the sock.