Petri dish dispensing station (60 mm)

Design allows for easy refills. The hole in the back was added for an easier dispensing experience. 

These models can hold 64 dishes and have different styled bases: small footprint, standard tray or an alternating tray.

Supports are needed for the bottom part of the sleeve. 
The slits in the sleeve can be printed without supports.

For individual holders, or different sizes, check these dispensers:
https://www.printables.com/model/936477-petri-dish-dispensers