Too busy to bother with external speakers for your iPod? Still can't shake that fascination with colored blocks after all these decades? Take heart, young buck, as the iPod building block speakers can keep that kid in you alive for a good bit longer -- though we aren't sure the audiophile in you will be too pleased. These non-powered "drivers" get amped after being plugged into an iPod's dock connector (sorry, iPhone users), but curiously enough, they only arrive in a single 2.5- x 1- x .75-inch form, which doesn't exactly fit flush against the last-gen nano. Nevertheless, those giddy about the notion of claiming a few as their own can pick 'em up in yellow, white, red, black, blue and green for $24.99 apiece.