An elegantly simple, functional (2 compartments, credit card securing flap) and surprisingly durable wallet.
You need only 2 items — A4 sized sheet of EVA foam and glue (PVA or similar). No cutting required.
Fold along a line about 1/4 from the top
(I am using a sheet with pre-printed design on one side, plain on the other)
Fold it in half to create the midline crease
Bring in the lower corners so that they almost touch the midline just above the bottom margin
fold about one third from the bottom
spread some glue inside — yellow areas shown in diagrams — second pic shows areas covered by the glue if project is opened up
Allow glue to dry
Enjoy this Do-able and Durable wallet!