I'm sure key chain is something very common you'll buy when you go travel, as a souvenir. It's easy to locate, inexpensive, small size and pretty useful too. But seriously how many of them you can use at one time?
Last time, I used to hang all of them at my office cubicle, as display =) But now, I just keep them in my cabinet ^^
How do you make use of the keychains you received?