I had a sushi take-out box that had a beautiful pattern on it. I tried to grow moss in it. I can't seem to get that right. So I decided it needed to be something else. I cut off the walls and used my iron (& oven) to flatten it. The oven shrunk it and made it a bit thicker, too. (Which I needed!) Then I used my xacto knife to cut out the guitar picks. I filed the edges smooth to finish them off.
I gave the first one to Travis. While I made more, he played his bass guitar for me. :)
I apologize for the dark shot!