Best Buy gift cards with built-in speakers

So you got a new iPod for Christmas and want to rock some tunes around the tree? Just plug it into your Best Buy gift card.

Opening gift cards is always a bit of a letdown. They're great gifts--I'd much rather get a gift card than some expensive gadget that I don't want or already have, and which I'll have to return for store credit. But the moment of revelation itself? Oh, a plastic card. Kind of boring.

Is that music in your pocket, or... Best Buy

Until now. Beginning Tuesday, Best Buy is selling $50, $100, and $200 gift cards with a built-in mini-headphone (one-eighth-inch) jack, connecting cable and speakers. Why? Because they can! Plug any MP3 player into it and you'll be able to rock some tunes around the Christmas tree. And you know they'll sound awesome. Or at least as good as the ringer in your cellphone. (I saw this first on Engadget, which embeds a wacky online advertisement for them as well.)

Not to be topped, Target's offering gift cards that double as a digital camera. Which is great for off-the-cuff holiday-morning shots, but somehow that lacks the instant appeal of the audio gift card--you'd have to connect the camera to a computer before you could really do anything with the pics.

Prediction: these things are going to be huge. You will know somebody who gets one of them. Maybe you'll be that person.