It's very easy -- just a circle folded in half then folded back and forth. But light and fun.
Then I found some double sided colored paper, so of course I had to try it with that, too. I snipped a shred away from the top layer of each fold to show the color beneath, and attached earring wires.
Then I made the ones below with a music print and I tried slipping in a slightly larger red semicircle between the fold, and that worked a treat, I think.
They'd look lovely, I think, hanging in a line on a string but here they are just as small ornaments to hang.
And someone just sent me this link, so I can also send you to a pattern.
She's used semicircles for her cards, but I used circles folded in half — it makes for a more dimensional earring or hanging ornament, I think.