Forget all those silly iPod carriers, you know you'd be the only hipster toting your iPod in this baby. The Rock Steady Stereo Beat bag comes in 7 color combinations and includes a 2.1 XPA stereo system and bass boost subwoofer—all powered by 4 AA batteries. And yes, it works with any MP3 player, but since it's MacWorld week and all, we're going with the iPod. I am lovin' this bag, but can't seem to find a price yet. Will definitely keep you in the loop. LifePod also has a range of backpacks, gym bags, messenger bags, cooler and beach bags, and travel cases with built-in stereo systems in case you wanted to check them out.

Lifepod Old School iPod Stereo Beat Bags [i4u]