Hello, everything is in the title, I will present my way key organizer Swiss Army knife.
Very simple to build, all you need is a piece of aluminium, some washers, screws and nuts.
Here aluminum comes from an old coffee machine. It's better when it's free.
Cut your aluminum piece as you want, and drill the holes for the mounting washer and toggle key.
Nothing very difficult but super convenient everyday.
Sorry I had no banana available. ^^