Who needs a funeral home or tombstone. I've told my family to burn me and not have a traditional funeral. I want them to spend the least money possible. Put me in a necklace, plant a tree, spread my ashes somewhere, whatever. Things that don't need to be done in a funeral home. It will be hard enough for them to go through losing their father/husband, last thing I want is to cause financial hardship.
(I'm by no means taking away from this story, it's terrible.)
This is my take however I would be ok with my body being used for organ donation and medical research. Apart from that I don't plan on hording any reelestate in my death.
FYI, cremation can still be expensive. If you are serious about spending the least amount of money possible, consider telling your family you'd like to be donated to science. But, do be aware, there can be some controversial things under the umbrella of "donated for science", and they'd have no control over what.
Doesnt matter to me. Science can do whatever it wants with my meat when I'm through. Dissect it, preserve it, shoot it out of a cannon, stuff it and use it as a sex doll, it doesn't matter. It's not me at that point, it's just meat and bone. Although I'm probably an outlier, I never got the whole reverence for the dead thing. They're dead, literally nothing after that fact matters.