They can make animal food from my remains if they like.
A "natural" funeral, somewhere in some woods, no headstone or anything like that would be OK too. Thank goodness, embalming is not a habit here. So, whatever happens, my remains will disappear in an oversee-able amount of time.
Wish I had for a long time was to get buried in a bog. Take my carbon away from the atmosphere for a while, and then be burned a thousand years later for the sake of distilling a nice single malt worked well for my imagination.
I do not really care what happens. As long as it is OK for those who stay behind.
Did tell them that if they would decide to get ashes of me pressed into a raw diamond, that then they'd better toss me away on a pebble beach. Don't want descendants fighting over who gets grandma in the shape of a diamond.