What it is: A stencil and ink set.
What it's supposed to do: Allow you to stencil your name, initials, or some other identifying label on your basketball in permenant ink.
What it actually does: The Ball Tattoo works exactly as advertised. It goes on in a couple of minutes and the resulting "tattoo" looks pretty stylish. It resists fading, too; I've been using the Ball Tattoo for about six months and there has been little or no visible change. Supposedly, you can't even file the ink off, although it's probably better not to try.
Who it's for: Anybody who's paid good money for their basketball and wants to keep track of it. Sure, you could just write your name onto the ball with a felt-tip marker, but it'll look only as good as your crappy handwriting, and then it'll wear off in a couple weeks.
What it says about you: You understand that there are unscrupulous and clueless people everywhere, and discovering that somebody walked off with your $50 basketball while you were in a game is a bitter pill to swallow.
The specifications: Each Ball Tattoo kit contains one sheet of 45 one-inch tall stencil letters, masking strips, a tube of ink, and an applicator brush. The seller claims there's "enough ink to ID up to three balls," which might be a little deceptive. There's actually about 20 letters worth of ink in the tube, so choose your ball ID carefully, Amadeaus. The ink works on rubber, leather, and synthetic balls. Currently, only one font (Lasertac) and color (black) are available.
Cost and availability: $6.95 (plus S&H) at Fastencil.com.
A note of caution: One of the product's taglines is "Looks like silk screen. Works like Kryptonite!" I'm not exactly sure what that's supposed to mean, except that if Superman plays in your pickup league you might accidentally kill him.
Update: Reader eljpeman astutely pointed out that the subtitle on the graphic reads "The permanent ID for balls." For those of you with dirty minds, I'm pretty sure they're talking about basketballs and not, uhm, well, yeah.