I went to buy folders and came back with this:

It’s an aluminium (credit) card box, with a powerbank built into the back.
They had some without powerbanks too:

But they were so similar I went with the powerbank one. My thought was something like this: I can put my cards in it and keep it in my pocket without bending them and it’ll be RFID protection too because it’s aluminium.
When I got it home an unpacked it, I decided that it might have been a good idea, but it was a ridiculous box.th
The inside dividers would have probably been less flimsy if they’d been made of bin-liners…

..and the powerbank’s capacity was tiny..
..and the box didn’t fit comfortably into my pocket..
..and it has a micro USB cable..
..but apart from that..
..it was fine.
It went on the giveaway table at work and it’s gone, so hopefully someone else is happy with it 🙂
🙂