The Snowflake Card Thinlit on page 22 of the Holiday
catalog is a very cheery option, with a snowflake that
swings as you open the card.
Stampin' Up! has provided a video for this product:
SU demonstrates a technique for creating a snowflake backdrop.
For this project, I used Brushed Silver card stock for
the snowflake (p 193 in main catty), with sequins from
the Frosted Sequins kit on page 22 of the Holiday Mini.
Add a little Designer Series Paper and Silver Ribbon and
you are set!