My suggestion is same as harry, in addition I would suggest to start a blog writing with the subject that interest you, blog index fast and it get popular easily, if you write good quality content and put your effort to promote it regularly. Later you can use adsense like program, auction site ads, affiliate programs, and in addition you can write reviews and posts for sponsor's those come through sites like blog to profit, pay for posts etc. Friend, as far I know In reality there is no any "ethical" way to earn money easily, I again repeat you need to work hard, later once your site monetize you'll find it easier to earn money through your site without working hard.
Instead of doing any unethical business I would personally consider to deliver news papers in the morning if I have nothing to work, I will earn little but I will be peaceful and happy.