Ways to make extra money

Play the Stock Market.
The stock market is not always the safest way to make money but if you know what you are doing you can make quite a bit of extra cash. I suggest you only use money that you can afford to lose. You don't want to lose money that you need to spend on something else.

Get a waiter job.
Some places will just let you work one night a week. At some restaurants you can leave with over 200 or 300 dollars a night just waiting tables. Try to find a restaurant where the plates are expensive. Generally the more expensive the plate, the bigger the tip.

Sell things you don't use anymore.
I think one of the best ways to sell items is through ebay. Going to a pawn shop, you generally won't get as much as you would through ebay. The pawn shop makes you an offer and you can take it or leave it. But with ebay people all over the world can bid on your items.