Life insurance to cover my mother - the only one I give a damn about in my family - organ donation, if it can be done, and then cremation. Mom will throw my ashes to the ocean, and done.
On a more serious note, people, talk it with your families/loved ones/whoever could potentially be left to deal with the aftermath. Nothing worse than the unthinkable happens, and those who are left behind have to deal with arrangements, many times not knowing what the hell the departed wanted, on top of the emotional pain. Funeral arrangements, or cremation, or whatever, are a pain.