Seven Tricks to Staying Warm During Winter [VIDEO]

I'm watching the snow come down outside my studio windows right now.  I'm getting cold just looking at it!  So, naturally, I took to the Internet for tips on how to keep warm.

These are all some pretty neat tricks.  Except the battery hand warmer one.  Kinda worried about messing with that one...

Have you trued any of these?  Do you know any other tricks for keeping warm?  Let me know in the comments!