Iota Geminorum IV is one of my favorite vacation destinations. It's a pleasant planet full of small furry creatures with no discernible faces, feet, legs, or arms. Owing to certain issues with their reproductive abilities, ownership of these critters has been highly regulated here on Earth. Until now.
For $24.99 at ThinkGeek, you can pick up a pair of Tribble Slippers. There's no need to fear getting eaten out of house and home. These tribbles are sterile, so you won't wake up to find yourself smothered in heaps of the little fuzzy things
The tribbles seem to really enjoy being used as slippers. They make happy purring noises as you walk. Fortunately, there is an on-and-off switch, so you won't have to listen to your tribbles cooing all the way to the bathroom in the middle of the night. Each foot runs on three LR44 batteries (included).
You will notice some slight variation in the color of the tribbles on either foot. That's so you can tell them apart. Just remember to keep them out of your quadrotriticale storage and away from Klingons at all times.