Been meaning to ask. I haven’t used a wallet in years. I use a carbon fiber clip to hold cash, tapsigner and credit card. Can you make a cover for it? 
Discussion
Not sure I want to get into making a cover because I don't know if it would be complicated before I actually try and I have too much going on to add this, but I have a very minimalistic cardholder with cash clip coming later. It might interest you. It won't be very much larger than this
Yep interested for sure