Kitsch Mini Potato Vegetable Stud Earrings £4.15 Kitsch Mini Potato Vegetable Stud Earrings. Realistic miniature potato stud earrings handmade made from polymer clay. Size: 9mm. Silver plated and sterling silver studs available. Nickel free. Butterfly backing. Please note: Potatoes will vary in size, shape and appearance due to the handmade process. * Not suitable for children.