There are all kinds of interesting accessories for portable music devices. One that I've not come across before is
stereo luggage. The luggage is
Boom Bags and it can be used not only for great sound in your hotel room, but for presentations.
I don't know if I'd feel real comfortable settting my luggage on a board room conference table as a speaker when making a project or sales presentation, but I guess that's no big deal for some people. After all, "Boom Bag™ luggage features a built-in speaker system with an amplifier and subwoofer! ... Designed by experienced travelers, Boom Bags were created to be the highest quality luggage available!"
They may not sell very well, but I'll give them this - Boom Bags just might corner the market on luggage sound systems.