For only $7.99 you can buy your very own battery-operated weasel balls.
From their site:
Weasel Balls Make Great Gifts
Weasel balls are a gift you can give the whole family! Is there a better way to say "I love you" then with the gift of a weasel ball? No there is not.
Cats love the Weasel Ball. And by love, we mean hate. Most cats hate the Weasel Ball and want to attack, scratch, bite and kill it. Some cats are just deathly afraid of it. It's fun. If you let your cat have a little too much me-time with the weasel ball, it may get ruined. No worries though, because then you can just order another one. Or seven. Ruin all the weasels you want, we'll make more! And by "make" we mean "order from China."
To Gain Popularity and Acceptance Among One's Peers
Bring it to a party. It will be a big hit. Then everybody will remember you as The Weasel Ball Guy.
"Hey! It's The Weasel Ball Guy!" they'll say. "Can I have your phone number?"
"Damn straight you can!" you'll respond. Unless you're a girl -- then you'd say "HEY! I'm not a guy, you stupid jerk!" Either way, you are now beloved, and you may thank the weasel.
All your life you have wanted to order something from a website called WeaselBalls.com. That day has arrived. If you order more than one, you can tell everybody you know that you "bought some weasel balls off of the internet." The story alone is worth the purchase price several times over. If you so desire, we will write, at no cost to you "CAUTION: WEASEL BALLS INSIDE" on the outside of the box. We are completely 100% serious. Your mail carrier will think you are so awesome. If you desire to be less awesome, we can mask the fact that you just ordered something from a website called WeaselBalls.com. We will work with you to fulfill your Weasel Ball needs.
They're Animal Friendly
The weasel fur is made of acrylic, a synthetic fabric that is not derived from an animal. If you're a vegan, or you just own a pair of birkenstocks -- have no qualms about ordering a Weasel Ball, for it is neither real nor edible. You should never ever attempt to eat the weasel. The previous sentence is a good general guideline on how to live your life.
The Weasel Ball Teaches a Valuable Lesson
Never ever give up.