Minimal symmetrical box for 30mm arcade buttons, specifically the Swerry Button for Cherry mechanical keyboard switches, but theoretically should work with any 30mm arcade buttons; just check the total depth.

The photo of the black print is the 20mm-height box, the red print is the 30mm-height box.

My toddler is super into pretend play, and I thought some buttons would help her imagination with pretending to be in elevators, flying a plane, or whatever she can think up!

Print top-down—unless you want an ironed top, then print top-up with supports.

20% cubic infill is what I went with, your mileage may vary.

Made in Tinkercad; edit/remix/adapt it online.