I've just had a thought, so decided to post the question.
As you will all know, when setting up your booth (or whatever you use), there are numerous low voltage devices, each requiring their own PSU, own 240v plug etc.
When you think you have a mixer, laptop, wireless mic, dmx controller etc etc, this soon adds up to a lot of 240v plugs, psus and wires.
I would love a universal PSU, with a single 240V input, with multiple outputs at selectable voltages, 5V 12V etc.
Would be great for freeing up 240V cabling.
Does such a device exist? If not, fancy making one