Project - Ribbon cards

it looks like transparent corrugated plastic board. (like corrugated cardboard only in a different material, of course) Maybe there is a special name for it... I don't know that...

Great idea! I'm currently using white foamcore board, but I like this look.

I used a sheet of plastic signboard I got at a local signs to go place. It was pretty easy to cut with a box knife into smaller strips. All the ribbon is pinned on. I tried using glue dots, what a mess!

I would love to recreate. Any ideas on what you used?