This is a simple phone stand, that can incorporate wireless charging and cooling. I designed it from an old wireless charger I had laying around so you may or may not have to make changes depending on what board you're using. I also use the prototypes without chargers so it's not necessary to use one if you don't want to.
You'll need a minimum of 4x M4 bolts and nuts, 2x12mm and 2x16mm worked for me.
Printed my final version using the creawesome mod for Cura 4.0, turned out very well.