Ball pit balls are one of my favorite throw away items to create with. They can't be recycled where I live (or in most places), so I enjoy trying to figure out what their new purpose should be after they've outlived their usefulness in the pit. The pink in these earrings comes from leftover parts of reworked and reimagined ball pit balls.
 
Approximate Measurements:  6mm circle
Ear wire Metal: hypoallergenic, nickel-free stainless steel post
Material: trash plastic, plant based bio resin
Shape/Style: 6mm circle
Colors: pink, silver