I haven't seen a boombox in public in oh, about, 15 years.  Although they were a staple of 80s culture, they are quite unnecessary since the revolution of personal media players and home entertainment systems.  This "stereo sport case" by iHome certainly resembles a boombox, which it is, and so much more.

First of all, it's way cute and best of all, it's extremely simple.  Just like the regular iHome, you simply plug in your iPod and the music comes streaming out throught the built in speakers.  Only this one is a lightweight zip-up case that allows you to do it anywhere, free of electricity.   Take it to the beach or any public area where you might want to wirelessly play music from your iPod, without the hassle of dealing with batteries or extension cords.  No need to worry about water ruining your music player, because this rugged case is also water-resistant (the iPod goes inside). 

Or, attach it to your headphones and while riding your bike (it comes with 2 brackets for this purpose).  It does seem a tad bulky to use by yourself at the gym, as the website suggests, unless of course you have issues holding onto the tiny iPod (one of those armbands might be a smarter choice though).

It has a remote control, and also charges your iPod with the included adapter.  Sa-weet!