I saw the Cath Kidston "Doctors Bag With Patches" and I wanted one. So 4 years ago, I made my own, using an ancient corduroy bag, and badges from my Stash. I have been very pleased with it. It holds loads, it squashes down nicely and has a small zip pocket inside to hold keys, pen and phone.
But the original bag is well over ten years old, and has started to disintegrate.The suede piping round the edge covers a metal wire, and that has started to come out. It is not a good idea to have sharp wires protruding! The buckles keep unfastening too, which is inconvenient. I was reluctant to discard it, as it is so useful. Then I went into our Cancer Research CS, where they were having a sale - everything £1. I got a Fat Face Bag for just £1!!
I have always hankered after something from FatFace, but it's a bit expensive to buy new. Anyway, I removed all the patches from the old bag - discarded some of the tatty ones, added in a few others from my Stash. I moved the two school badges to the sides [not teaching there anymore] And now I have a new Patch Bag all ready to go.