A few years ago for different reasons this idea came to my mind, my grandma died and she always been a passionate for her garden and her plants.
I found out that is actually possible to create seeds from ash, so I thounght it would be a great idea to create a funerary company that incinerates your loved ones and from the ashes creates a seed so you would have the opportunity to plant it in your own garden and somehow feel that your loved ones are still with you.
And of course my revolutionary idea would be within the reach of less wealthy people and also save all the space that the graves occupy and increasing that people plant more trees, plants etc
I guess by the time this must be invented but so you know that I had the original idea haha!
:)