My mother, who just turned 88, and is likely to outlive us all, said she wants a 'green funeral'. No embalming, and basically put in the earth in a biodegradable
bag with an ummarked grave underneath a tree. There are some 'green funeral cemetries opening up where no grave marker, but they can bury you with a little rfid ball so people can locate your body if they want to with the proper equipment.
She basically doesn't want the embalming fluids to pollute the environment.
My father, who is deceased, when asked 'how should we handle your funeral' said 'Surprise me'