500ml transparent flat bottle, you can use it directly or, make a leather sleeve for it and sell a b..
Here are some high quality pvc plastic bill sleeve for you.
There are 3 sizes:
PVC card slots, card cells, card sleeve, 24 cards in, you can use it to make card purse :)
PVC card slots, card cells, card sleeve, 1 cards in, you can use it to make swivel card purse :..
When you make a wallet, sometimes you need to make a picture slot, here is the film for that.