Your life could save many if you donate your body to science. Donate Life America is a program where after your passing you can choose to donate your body. Nurses in training and Surgeons in the making who will learn new techniques that could save millions.
Donating blood is something you can do as well. Somebody is always your type. Donating blood could save others. When you donate they only take one pint of blood, but that blood can save up to three people's lives.