Moza / Simagic / D1 spec quick release mount. Mount to your structure of choice with an M8 socket head bolt and slide on your Moza, Simagic, or otherwise D1 spec compatible quick release wheel for storage.
Note that plastic is plastic, and plastic wears; and while even PLA is fairly strong, the design of the quick release interface itself puts significant amounts of stress onto the mount. Do not apply excessive force to a wheel while it's attached to this mount.
The author marked this model as their own original creation.