Hallmark made a set of Muppet Show placemats in 1978. The placemats were sold in sets of six. Each placemat was made of heavy paper, measuring about 14"x11".
The placemats featured a drawing of Kermit the Frog, Fozzie Bear, Rowlf the Dog, and The Electric Mayhem -- Dr. Teeth, Floyd Pepper, Janice, Zoot and Animal.