I made these today!
I bought 5 packs of polymer clay: pink, orange, yellow, green and blue.
I rolled them flat.
I cut them into little rectangles.
I made holes in them and baked them.
I strung the large ones onto a necklace, and stacked the small ones to make earrings.
This shows them before I baked. As you can see, I made twice as many as I needed, so I might make the rest into a matching bracelet.