I use one of these for my amp, cables, wireless transmitter, mics, zoom, flip,adapters, etc. It won't fit all of a band's cables, but it's pretty roomy and has a bunch of pockets.
http://www.google.com/imgres?imgurl...=_KBUUYZQsaPgA9WYgcAM&ved=0CE4Q9QEwBg&dur=633
http://www.google.com/imgres?imgurl...=_KBUUYZQsaPgA9WYgcAM&ved=0CE4Q9QEwBg&dur=633