I was inspired to do this while going back through Gary Gygax's notes and stated intentions for an updated version of AD&D, which never ended up getting developed and published. One of the new character classes he intended was the jester; a mix of magic, acrobatics, and skills of verbal persuasion and obfuscation.
Taking the bare-bones notes that he laid out for the class, I went to another of his published works, Dangerous Journeys, to get more inspiration for just how some of the stated powers and skills might function, and filled in the rest with my own material. There are a dozen new spells (some inspired by classic circus clown gags), a fully laid out system of acrobatic and verbal patter skills, and a few new magical items to round things out. It comes in at eight pages total, and you can download it -----> here.<-----
EDIT: Clicking on the picture only gives you a larger version of the picture. To download the pdf, click on the link in the text I surrounded with arrows. :-)