This is our card this year. I added a bunch of presents, bobble head pictures, and other goofy stuff. It folds flat to fit in an envelope. Super fun and the kiddos love it to.
and the template for you:
Tips for assembly:
*double sided paper works best because you will see both sides.
*heavier paper is preferred.
*dotted lines are for tabs/folding.
* fold each of these in half before folding tabs.
* when assembling, pieces fold down and out.
* I used a tape runner for adhesive not glue because I couldn't wait.
* If you fill the sled, remember to weigh each side equally so it's a balanced sled. We don't want anything to fall out.