I've had several discussions with my kids and my mother about this topic. I, too, want to be an organ donor and then I want to be cremated. My folks were all against cremation...dad considered it a pagan ritual!

But I had some long talks with my mother about burial costs and the religious aspect of cremation(there are none, as far as I can tell!) and she is starting to come around to my way of thinking.
Since I don't own this property, my first request to put my ashes in the garden where we put the rest of them(
wood ashes~relax, people!) just didn't make any sense!
So, I decided that the boys should go camping and fishing where we always did and sprinkle them there. AND....have a good laugh about all the good times we had, catch a few trout just for me and plant me some wild flowers in the spring~it doesn't matter where!
I don't want my boys to have to tend a grave and stone over the years over my "clay pot" and feel guilty if they can't make it over to mom's for Memorial Day, if ya know what I mean! I know some people's culture deems this as a sign of respect for the dead and a way of remembering.
In my way of thinking, respect is to be shown while folks are living~ by loving them and caring for them until they die. And, since I never built any memories in cemeteries, I can't imagine why a trip to one should evoke any more memories than just sitting around talking about my life, their lives, our lives.
Writing on a stone will not be my epitaph....the love that I left to all the people I know will be all the tribute I need!
Besides.....my ashes will be more easily composted than will a big ol' piece of meat encased in a lacquered box!