Walmart has the Airblown Inflatables Snowman Car Buddy for $10 with free in-store pickup or free shipping on $35+. You plug into your car's cigarette lighter and display in your front seat.

This may sound like a dumb idea, but I can think of at least three great uses for this:

1. Delight (or embarass) your children by rolling up to the pickup line with cheesey Christmas music blaring and this thing hangin' out the passenger side.
2. A friend to talk to (that won't ever judge) on your long drive to visit family for the holidays.
3. CARPOOL LANE.