Why no spinoff
It would have been cool to see a djinn character being the jeannie role and a female character taking the tony part.
shareThere was a cartoon in the 70s but stayed in the teen world.
There was a Djinn there that would always said Yapple Dapple.
Not a spin off but a knock off.
I actually enjoyed the cartoon, called simply, "Jeannie" and remember watching it when it first aired. It wasn't a knock-off as it was produced by Hanna-Barbera in association with Screen Gems, the parent production studio of I Dream of Jeannie at the time. Here's a quote from a page which has more info than I can type up here:
According to IMDb, the Hanna-Barbera show The New Scooby-Doo Movies had gone over budget due to its number of guest stars, leaving the studio without enough money to afford the original I Dream of Jeannie cast for the cartoon spin-off. Instead, Barbara Eden was replaced by Julie McWhirter as the voice of Jeannie. Mark Hamill provides the voice for Corey, in his first voice-acting job.[12] [13] Along with voicing the character, he sings the theme music.
from this site: https://everything.explained.today/Jeannie_(TV_series)/