Wall mounted baseball cap display stand designed for installation with command strips (up to 2 large size strips can be used but medium and small are fine too).

Prints as two parts which push together as an interference fit, no fasteners required. Depending on machine calibration you might need to sand a little if its too tight of a fit. Can also be glued to lock it in place although I didn't find any need for it. Printed perfectly on my X1C.