kirigami snowflake

Who didn't make paper snowflakes as a kid? Using a simple kirigami technique, you can create six-sided snow crystals to hang in your home. Here is a good place to start:
http://www.origami-club.com/xmas/snow2/snow2/index.htm
http://www.origami-club.com/xmas/snow3/snow3/index.htm
http://www.origami-club.com/xmas/snow1/snow1/index.htm

There are lots of ideas for snowflake cutting patterns at sakuraさん's blog, mama's hobby.
Or, if you want to try out different patterns without cutting anything (or if you're just feeling too lazy to pull out paper and scissors), you can cut out virtual snowflakes with Barkley 's free online Make-a-Flake .