My spouse, Margret, has had a concept for a Dungeons and Dragons story centered around Mind Flayers for over a decade, and even briefly made it into a webcomic long, long ago. The idea and characters have morphed a lot now, and Margret is strongly considering a reboot as more of an interactive story game.
I'm not going to be doing designs for it but I doodled how I imagined the main character's study chamber/bedroom and a few goofy illithids while we were drawing together.