Envelope - having Square Lock Material : Two tone Square Paper Made by me Diagram : http://origamidiagram.blogspot.in/2013/09/casing03.html Consolidated Diagrams
Wallet from one Paper Material : Tyvek Envelope for better strength and longer life of model Normal Paper sheet can be used. I have made it from normal tinted paper and using it since 2014. Tutorial Video for Wallet
Box - Cube having Lid One Sheet - Box Designed by David Brill and made by me Paper : One square paper (Two tone will be preferable) , if possible use bigger size paper for first time.