Insta-Grow Pills are a "Muppet Labs" invention created by Dr. Bunsen Honeydew and Beaker in the 1979 film The Muppet Movie. As Bunsen and Beaker show Kermit the Frog, Floyd Pepper and Animal around their Ghost Town workshop, Floyd's attention is drawn to what appears to be a four-foot prune. It is, in fact, a four-foot prune, created by the magic of Insta-Grow Pills. Bunsen explains that the pills can make anything grow, but the effect is sadly temporary.