Door in a Jar

Door-in-a-Jar was one of three inventions by Dr. Bunsen Honeydew which he gave to The Muppets in their attempt to rescue Gonzo in Muppets From Space. Door-in-a-Jar is a jar, which a door comes out of. However, when it is needed, the door is only big enough for Pepe the King Prawn and Rizzo the Rat to fit through.