On Wednesday at 9pm on Investigation Discovery, The Will: Outrageous Final Wishes will have a segment on the last wishes of Mark Gruenwald, Marvel editor who died in 1996, aged 43. His will asked that his ashes be mixed in with the print run of a Squadron Supreme trade paperback. Which, a few years later, saw print. I have a copy of that print run on my bookshelf.
You can see a deep-throated trailer here;