I found these at Big lots and picked up a couple, they are 5.00 and you can remove the portable battery powered amplifier to use on whatever you choose.
It runs off 4 AAA Batteries and you can make the lil battery powered speakers sound like a lil boom box.
Carefully cut around the amp, once you can get your hand behind it you can unscrew it.
You also need to cut the wire going to the speaker.
The 1st time I did this I really over cut, you can just go around the amp and then have a descent carry case left over.
Be careful not to cut the wire closer then you want to, it runs up in the case. (up and left)
I also just rolled up the other wire that will run to the IPOD, it has the green shrink wrap on it.
There is a "share port" but it is not amplified.
The unit runs off 4 AAA Batteries.
On my bicycle I hang it from the mirror and its a great lil wanna be boombox.