put it in a bank.. or start a loan shark business and cut off peoples hands! na the above are quite good, make a blog and sell in a month of good work!
you can use 200 dollars to buy into stock market. Go to like etrade, etc. T Rowe has a option you can get started for low amount of money into a mutual fund but have to put in like 25 dollars a month. My suggestion use it for link building, get a how to book or ebook on stock market, seo, something useful. One more thing: stay away from hyips, autosurfs, get rich etc. You will loose money. I use to do autosurfs and my strategy is put the money the get it out as soon as possible.
We are currently looking for new investors for a network of websites that we will be setting up soon. If you would like more detials then contact me, You should make back $200 within 2-4 months