Marceline Magnet Where can I find other marceline designs? Expand or collapse section. In addition to marceline designs, you can explore the marketplace for adventure time, cartoon network, and princess bubblegum designs sold by independent artists. What material is this item made of? Expand or collapse section. 0.5mm (20mil) flexible vinyl. Black magnetic backing strong enough to hold notes, photos, and drawings. Recommended for indoor use. Printed in the U.S.A. Learn More » What USA ship…