Bringing your own mug to the office instead of nicking one from the pantry whenever you would want to make a drink for yourself is a good thing. It helps to show the world that you are your own (wo)man, and not only that, at least you need not get mixed up with the other kinds of similar mugs since everyone has an IKEA mug these days. Thinkgeek’s $11.99 Constellation Heat Change Mug is something else, where it looks as though it glitters with stars when empty, but fill it up with a hot beverage of your choice, and you will be able to see lines appear between the stars to illustrate particular constellations. As your beverage cools, so too, will the constellations disappear. Do you think that this can be rather distracting?