The [<googa>http://www.akaipro.com/product/apc-mini Akai |APC Mini] <googa> is well suited for use as a Midi controller for Box Of Stops.
The large grid of 64 buttons can respond in Green, Yellow and Red, to show the different [[Bank|banks]] in Box Of Stops. And the nine sliders at the bottom can be assigned as volume controls for the banks and [[Master volume|master volume]]. For example, the ability to balance pedals is surprisingly useful.