Not recyclable. Most are made from synthetic material and therefore cannot be composted.
Easy: Wool Dryer Balls
Wool dryer balls are reusable and are tossed in with your clothes just like a dryer sheet. You can add a couple of drops of your favorite essential oil on them if you want your laundry to have a fresh scent.
Deerhaus Decor at Findlay Market sells dryer balls in-store and online.
You can also use your own with wool yarn and a felting needle. Check out this tutorial.