I find soda (pop?) bottles during clean-ups all of the time. I recycle most of them, but sometimes I save them to make art and jewelry. The pretty emerald green color in these recycled earrings comes from that green trash plastic.
 
Approximate Measurements:  6mm circle
Earwire Metal: hypoallergenic, nickel-free stainless steel post
Material:  soda bottle plastic, plant based bio resin
Shape/Style: 6mm circle
Colors: green, gold