Hi, this is for your last page on readers’ tips. Something I did for my wife recently:
The clip on those aluminium wallets often break. A quick and neat fix is to glue a strip of Velcro in its place. Use the soft side of the Velcro as the flap.
Only a small piece of the rough (hooked) side is needed on the other side. I used epoxy glue, which is probably overkill. Superglue should also do the job.