Filmation's storyboard department was known for its in-house gags. This would more than often manifest itself in the storyboards illustrated by the artists. Bob Forward was one of the many members of staff that enjoyed gently mocking the shows he worked on as well as his own artwork. In this panel from the season one He-Man episode "Double Edged Sword" we see Bob recommend that the layout department not copy his design for the Scatter Ray which he amusingly describes as looking like a Mixmaster. Interestingly, there is a bit of background on this story, as "Double Edged Sword" was the episode in which Bob was asked by those in charge at Filmation to design a gun that did not resemble a gun! This resulted in him illustrating the character of Thad holding a pineapple in one particular illustration!
(click on the image to see it at full-size)