Pepperwood International produced a set of Muppet Babies rubber stamps in 1984, as part of their licensed Stampos line. Four stamps were made, each packaged separately -- Baby Kermit, Baby Piggy, Baby Fozzie and Baby Gonzo. The Kermit and Piggy stamps were also produced with a PVC figure of the character attached to the top of the stamp. The illustrations on the packaging were by Daryl Cagle.
In 1985, the Kermit and Piggy stamps were used as a free premium for Oral-B Muppet Babies toothbrushes.