I made these little keyrings about a month ago. I was invited to participate in a craft show and I really did not have enough crafts to offer, so I embroidered these little things in one night while watching TV.
It was not difficult at all. I tried the ribbon as the piece to insert into the metal ring but then i remembered that I had some eyelets and a tool to apply to the keyrings. It worked out just fine as well.
I will post the instructions with some detailed pictures in how to make this craft.