Same for human parts for me.
Weirdly enough, I still think my preferred way to dispose of my eventual cadaver is being made into a book.
I wouldn't want to own book me, but I love the idea of being a book. Not like a gruesome one where someone could tell right off, something more boring than that.
Oh yeah, being turned into a book is unlikely to be worth the headache for anyone involved. The tree burials that are legal in some spots is a reasonable option. Or just donation to science.
Whatever is cheapest/lowest fuss is fine. If that means I get reused or recycled great! If not, just don't let me be a bother.
Sky burial is also awesome. Hopefully there are enough vultures to keep that up in at least some places. There's a 99% Invisible episode that talks about collapsing vulture populations resulting in issues with doing it in India.