I wanted something to extend the side of my Ikea Lack table a bit so I could more easily fit my Creality CR-10 control box on it.
It means the control box is more than half hanging over the side of the printer. It has holes in it for both feet of the printer which fit nicely.
It was a work in progress but I don't think I will be making any more changes for now as it is working nicely for me right now.
Print on it's side for maximum stability and no support, or minimum support if you want them in the holes, I didn't bother.