Sew a travel card holder with Cheekyhandmades in London.
Super simple, very quick and so effective. Knock yourself up a new travelcard card (or bank or other card) holder, with just a tiny scrap of fabric. You can of course decorate your fabric, make it out of tiny patches, do some free motion embroidery on it, cross stitch a name or something to make smile on it, it’s up to you.
Start with a 4.5” x 6.5” piece of fabric. If you want to decorate it you will have to do that first. Once that’s done you can finish the edges with pinking shears, a zig zag stitch or an ovelocker. Fold the bottom edge over 1/4”, pin and stich this down.