While it’s rare for people to attempt to do funerals and burials themselves, more are attempting to undertake parts of the task themselves – but when they do, it’s currently difficult to source a casket direct from a manufacturer.
There’s a new small coffin maker for those people to choose; outside the box. http://www.outsidetheboxcaskets.nz/
https://www.newshub.co.nz/home/lifestyle/2020/02/outside-the-box-introduces-cardboard-coffins.html