Here are some snowflake coasters that are cheap and easy to make.
Step 1: Designing
No, head on over to Evil Mad Scientist Laboratories and grab their snowflake drawing app. It's cross platform, light weight and pretty slick.
It mirrors what you do to make a six sided design that looks eerily like a snowflake.
Play with it a bit and you'll be making professional snowflakes in no time. Save your favorites and you'll have a nice little batch of PDFs.