Here are some links to help in the creation of a green burial;
http://greenburialcouncil.org/wp-content/uploads/2016/02/Your-Green-Burial-Planning-Guide-2NEW.pdf
Simple Caskets, Pine Boxes and Urns
http://piedmontpinecoffins.com/
https://www.youtube.com/watch?v=P_mKtPWDVaA How to build a coffin
Shrouds
Cardboard Caskets
A cardboard casket can be purchased from a local funeral home