Sharing a remix from giuliomaffei90 ! This creator made the best looking and easy printing question mark block on the site IMO. I remixed the model by splitting it into pieces (avoiding colour changing prints) and added a key ring to turn it into a keychain. The model is fantastic and easy to print. If you like this model, please check giuliomaffei90 channel!

I would recommend to use the same type of PLA when printing all the pieces. I tried with PLA and MATTE but it didn't work very well. Printed all in MATTE and it's perfect. The pieces should all have a tight fit, but I would recommend to use glue to hold everything together.