Mount it anywhere. For portability, there’s no reason you can’t mount it on your power supply, provided that you have enough room somewhere. I wouldn’t think twice about doing that on a home brew power supply, but personally I would hate to deface something like a high end Astron or Pyramid.Sunbulls, is that something u can set on a desk or mount it on a wall or somewhere ?...
I'm looking into getting something to use on my power supply to add things to it as well...