You can donate your body to a medical school through a group that provides them with cadavers and they will make good use of you, cremate you and return the ashes in a nice urn to your family with a letter and plaque of appreciation. Contrary to popular belief, you can't legally sell your body to science. Laws prevent that. Now if you know a man that knows a man it may be a different story but I don't know that man or have his phone number.
My wife had to dissect those bodies in school. Cadaver lab...
But don't talk about gutting a deer in front of her