I really like Brian Dean's Magnet Dispensers, so I made a parametric stand for them. Holds six sets.

The one I printed and am providing has slots for an 8mm, 6mm, 6mm, 5mm, 4mm, and 3mm dispenser. Tested with the v4 design.

Open the F3D and change the favorites to whichever dimensions you'd like. Everything should scale appropriately. I suggest making D44 your largest magnet as this also sets the overall size of the model.

Prints best with a quick application of adaptive layers so the top filets come out nicely.

You can also just replace the STEP in my profile with your exported version by choosing “reload from disk” after right-clicking the model and then picking your exported file (that should retain the adaptive layers and other tweaks).