Sewing mamas has a download for making these really cute origami tissue pouches - it seems like the folds won't work until you have sewn it and turn it right side out. Really nifty. You put your tissues/hankies in the slot, and there is a space for other things too.
After making the above puches, I thought it would be possible to make a wallet with some tiers for cards etc. After two attempts to get the folds and proportions right, I came up with this: