Credit card wallet coin slot univeral

My design of a credit card wallet coin slot. It is 2.8 mm thick (a normal card is 0.8 mm).
There is place for 3 bigger and some smaler coins, but you need a full compartment so that the coins do not fall out.
To assemble, simply run the rubber band with a knot on the end through the guides provided on the base. When that's done again tie a knot at the other end and glue the covering.

You need:

  • elastik band
  • glue