I'll start. Enel: Start an electric company and make billions. Since I don't pollute, no need for extra spending. Use my money to influence the government and then sell electricity weapons to the military at ridiculously high prices. If they refuse, I would offer to join the military for a ridiculously high price. Alvida: Advertise my own moisturizing cream which I would say makes your skin impossibly smooth and guarentees you lose weight. The cream won't work, but I would already be too rich to care. Crocodile: Move to the Middle East or anywhere near the Sahara, and stay there and remain godly powerful. Kizaru: Same as Enel concerning the miltary. Luffy: Become a professional boxer, but only use the fruit's invulnerability to blunt attacks. Kailfa: Make a cream like Alvida, but mine works. Blueno: Start a company for travel. Mr 2.: Become a spy. Mr.3: Start a candle company. Hina: Start manufacturing handcuffs. Absalom: Become a spy. Magellan: Produce weapons for the U.S. military. Not sure if poison violates the Geneva conventions. Leo: Work at a hospital. Smoker: Use my smoke to power turbines. X Drake: Contribute my body to paleontologists.
Edit: You can now also pick periods in history you would live in with your devil fruit powers. Also you are the only one with devil fruit powers.