This is one of the projects that I've been meaning to do for a long time. I bought the felt for it over a year ago, and it's been sitting around in a bin in the basement ever since.
All it took was two pieces of pasta-colored crafting felt, pinking shears, and a sewing machine.
I cut a double-layer of felt into 1 1/2-inch squares.
Then I sewed them together, in a square shape, leaving about a 1/4 edge.
Start to finish, this took me 45 minutes. I originally planned to "stuff" the ravioli with something, and now I'm glad I didn't bother. It would've been a lot more work for no better effect. I love how these turned out.