If you're shopping today, you're on a good start to burning off those extra calories from yesterday's celebration.  You can park at the end of the lot or the other end of the mall so you are forced to walk further. You can take the stairs in the mall as opposed to the escalator or elevator.

If you're not planning on shopping, here's an interest chart showing how much exercise you would need to burn off some specific holiday meal choices:

http://www.fitsugar.com/How-Work-Off-Thanksgiving-Calories-6187020