Thinkgeek has this really neat officially-licensedTARDIS mini fridge that will keep your food or drinks either cold or hot, depending on the setting you choose.
The Large TARDIS Fridge really is big: it can hold up to 18 cans of soda. It’s also one of those neato fridges that cools or heats its contents (depending on which temperature you need). And though the Large TARDIS Fridge be mighty, it’s still made to travel. It’s even got a handle on top for grabbing if the Doctor tells you to run! Whether it’s cold jelly babies or warm fish fingers and custard (or the reverse), the Large TARDIS Fridge is ready for all your food and temperature storage needs.