While researching lube for cast bullets, I was reminded that the wax rings used to seal toilets to the soil pipe have many uses.
For example, winter is coming and people who are vulnerable to chapped lips often spend big money for chapstick.
The material in toilet bowl rings is virtually the same material and is even more effective and far more cost effective.
Of course, some people insist on using NEW toilet bowl rings for their home-made chapstick. That is both more expensive and less of a deterrent to licking one's lips.