The Monkees made some commercials for Kellogg's during the NBC years of the show and after Peter Tork left the group in early 1969, Micky, Michael and Davy made some commercials along with Bugs Bunny for Kool-Aid when the show began reruns on Saturday mornings on CBS in September 1969. Those commercials for Kellogg's and Kool-Aid were quite funny especially the one where the now trio are with Bugs in the desert hawking Kool-Aid. Many of the Kool-Aid commercials with The Monkees and Bugs are on YouTube. I especially like the song "Make Friends With Kool-Aid."