You can donate blood, plasma and eggs. Why not poop? Yes, your feces are perhaps your greatest untapped monetary resource. Thanks to a nonprofit organization called OpenBiome, you can cash in to the tune of 13,000 a year -- and save lives while you're at it.The frozen stool is administered to patients who are very sick with infections of a bacteria called C. difficile. The bacteria can cause extreme gastrointestinal distress, leaving some sufferers housebound.By introducing healthy fecal matter into the gut of a patient (by way of endoscopy, nasal tubes, or swallowed capsules) doctors can abolish C. difficile for good.