Maybe I could make few after work. Theres not much tools for metal at my work place so I have to do bit work with hand saw.

I can upload dimensions when I get home if someone wants to make one.

Edit: Added my paint art. Made mine from 2mm thick steel, make sure its magnetic.
Tools you need: Saw for metal, file, vise and hammer for bending, drill for starting holes and paint is nice.
I put some tape to bent part so it stays in better.