This is my design of the elephant wallet plates to create your own minimalist wallet.

You will need:
2x Shields (file has 2 loaded)
1x A strip of 1" wide elastic
Gorilla Glue (to connect the elastic or you can sew it)

Thats it!

Elastic- ( http://www.amazon.com/Dritz-9507B-Non-Roll-Elastic-1-Inch/dp/B004ALJMSQ )
Any superglue will hold the band tense, mine has never gave out. If you would rather sew it, that will work too.