Not sure if we are going to be first in the queue to buy one but we rather like the series of Sound Cases, displayed at CES by Sakar. These are basically cases for all kinds of audio products that also include integrated speakers.
The killer model has to be the MP3 Sound Case which has plenty of room for an iPod and even comes with a storage compartment for memory cards. Until we get to hear them we can’t vouch for the sound quality. Still at $29.99 per case, our expectations aren’t that high.