Some skydivers will have "ash dives." Your body is cremated, ashes placed into a specially designed pouch, and friends take you up on a final skydive. Everyone exits, joins up in a formation with your pouch making up one of the links, and at some point in free fall the pouch gets opened. You're quickly scattered to the ends of the earth from a couple miles up.

Even though there's no cremation involved, Tibetan sky burial sort of reminds me of that.