Rockboard by Warwick The Tray
The Tray from RockBoard is a universal power supply mounting solution for almost any multi-power-supply unit you can imagine. Its one-size-fits-all design can be mounted underneath any updated RockBoard pedalboard (except Duo 2.0). Due to the construction of the RockBoard's vertical support braces no holes have to be drilled into your pedalboard and it can easily be fixed with only one screw. Using the holes in the Tray's surface, you can either mount power supply units to it using screws or cable ties. Its flat surface also allows hook-and-loop tape or other adhesive tape to be used to fix your power supply to it.