Melt some PET water/soda bottles (e.g. with a heat gun) so the plastic drips on to the bottom side and scratch out a huge ass warning into it with a hobby knife (or any knife, really… It’s just PET). Also write another warning with a sharpie in multiple locations.

Why this method? Because that plastic will stick pretty good to the bottom of a cast iron pan—making anyone thinking of using it think twice, “How TF am I going to get that off without making a gross burning plastic stink?” Or a fool will try and quickly get annoyed that it won’t sit flat on their stovetop and it’ll be too far away from an induction heater to work. Make the plastic nice and uneven 👍

Also, if you’re just hanging it up on the wall no one will see the bottom so it won’t uglify your pretty hanging pan.

Melting a water bottle with a heat gun happens pretty fast and the iron pan will absorb the heat in the plastic quickly too. So the whole process will take less than a minute. Then scratching out a warning label will take a few minutes 😁