We always complain about the quality of user manuals of our cameras. We sometimes complain about the environmental impact of their useless paper.
Here is a delightfully intelligent solution to it: Make the packaging double as a user manual (or re-use the materials of the manual into a clever packaging for the DSLR camera).
Please check all the details on PetaPixel: This DSLR Box Design Doubles as the Owner’s Manual.