if you start jumpin around multiple ideas, trying one, another and third, you won`t go anywhere. Consistancy, patience and knowing where are you going will get you where you wanna be. As a respected navy admiral said "the best map is useless if you don`t know which port are you sailing to"... same here..
there are so many options, everybody is offering "get rich over night" schemes, quick money making recipes (had they all worked, we all would be millionaires, wouldn`t we?), sell, buy, stocks - anything you can do in real world to make a living, you can do online now.
Choose what you like. Whats your passion. What did you like as a kid? About what could you talk for hours, and have a deep knowledge of? What are your hobbies? Can you turn them into profits? maybe its model making, maybe clay sculptures, maybe you like to walk around WWII battlefields with metal detector digging for artifacts? Sell them on ebay!! Like fishing, camping, hunting? Think what kind of service or product YOU would like, and see if you can offer that and make some money? Dont force yourself, do what you like, be good at it and success will find you. All the best of luck