WEBKINZ
Stores kept selling out of these $13 stuffed animals, which come with an online counterpart who lives in "Webkinz World."

CAT EYES
Celebs went wild for lining their lids with a Cleopatraesque streak.

THE iPHONE
The sleek design had cell-phone connoisseurs camping outside stores to get one. Apple sold a million in 74 days. A price drop from $599 to $399 irked early buyers, but the phone kept its cachet.

CUPCAKES
The confection of choice for celebs like Katie Holmes—who kept them on hand while filming Mad Money—and Paris Hilton, who received three dozen while under house arrest.

GUITAR HERO
It's the video game that lets everyone—even musical dimwits—embrace their inner rock star. When the third edition of the series hit stores this fall, it flew off shelves at $90 a pop.

CLEAR JEWELRY
See-through bangles dangled from the arms of stars like Drew Barrymore and Cameron Diaz—but the fun didn't stop at the wrist. Transparent earrings, necklaces and rings were also clear favorites.

VIRTUAL GIFTS
For pocket change, Facebook users send pals special icons of anything from lava lamps to teddy bears. One of cyberspace's most popular presents? A pair of hot pink lips.

LOLCATS
The formula is simple: Photograph a cat doing something quirky and add an offbeat caption. The result? An image that's sure to make you laugh and go viral on the Web.

THE I'M NOT A PLASTIC BAG BAG
London designer Anya Hindmarch created this year's must-have accessory: a $15 bag with a go-green message.

BALLET FLATS
Ultraversatile (they work with both skinny jeans and the high-volume mini) and ultracomfortable, these shoes won over the hearts—and heels—of Hollywood's starlets.