I know some pedal boards come with built in power, which can then shut off all pedals, but for those pedal users who prefer batteries, how do you deal with shutdown of the board? Do you unplug the input of each unit, or is there some kind of switch available? And what are some decent commercial pedal boards for me to consider? I would probably have no more than 7 or 8 pedals, mind you, of odd sizes. Any recommendations?