When I designed my latest RPG adventure "Rolling with Laughter" I placed a certain monster in it that I discovered was a trademark by Wizards of the Coast as D&D product identity. What's a GM to do?
My first thought was to use the beeholder but misspell the word biholder every time I write byholder or behoolder. I wasn't sure if it's such a good idea, both legally and practically. You don't want to be inconsistent in your writing, confused GM creates confused players.
I also thought of creating the same effect by reskinning other things. Like having a wizard that specializes in anti-magic with his ten disciples (one spell each) and have them all levitate in a circle as they are clearly in the midst of some ritual. I love this stupid idea.
The solution (like most of my solutions) presented itself in the middle of a playtest when the players rolled a lousy perception check and thought the beholderrr was a cat. Suddenly the next encounter was a cat-holder and everyone loved it. (Art by the amazing Ori Ayalon)
The adventure is also a guide to running comedy sessions. Each scene has a list of the comedic devices used so new GM will learn to spot and incorporate "The Funny" into their own adventures. I debated if I should tell this but decided against it since it's mostly unrelated.