See, the TARDIS starts in London, resting calmly on a city street. All you need to do is add hot liquids (such as tea), and the TARDIS disappears (sound effects not included) and reappears on the other side in deep space. Where is the Doctor heading? Could be anywhere - but the important thing is, you'll get to tag along so long as you hold on to your mug. The Heat Changing TARDIS Mug reminds you that even a simple drink can begin an adventure.
It's the Disappearing TARDIS mug again! Shipping for one mug is $6.50 to where I live, but $7.20 for four - so you can offset the shipping cost by buying multiples or picking up some other interesting things.