I believe that Orthodox Judaism doesn't permit of embalming and fancy coffins. I know that the beliefs of the Amish don't, nor does Islam. Or have your friends tell the undertaker that you were a Jain, but because the Towers of Silence are too far away you have to be buried unpickled in a plain box.

Me, I want them to use whatever parts are useful to others. My eyes have seen beauty, let others share that. My heart has served me well and perhaps it can serve another as well. My liver...well, it might not be in such good shape by then, but perhaps someone can squeeze out some use between the alcohol therein. They can take what they need with my blessings.

Then cremate me. Preferably on the deck of a longship, my worldly goods piled around me and my wife lamenting my passing as the ship disappears over the horizon. But since my wife has made some small objections to this, well, grind me up fine and toss the ashes into the ventilation system of the last library I worked at.

That way, when they dust, someone will remember me and say, "DAMNIT! He couldn't even die without making more work for us!"