Times are tough. It seems that everyone is feeling the financial strain of the current economy. Here are some ideas for making some extra money to pay the bills.A penny saved is better than a penny earnedWhy is a penny saved better than a penny earned? Think about it. To earn a penny, you must go to a job, which entails all sorts of up front costs for things like gasoline, clothes and equipment. Then the money you earn is taxed by the government. On the other hand, while it is true that some money-saving ideas have some up-front costs, most cost little or nothing to implement. Remember, not one thrifty penny is taxed. Most people think they are living close to the bone, but a little research into frugal lifestyles can reveal a wealth of ideas for saving more of your money without settling for crackers and broth every night for dinner.Sell things you do not need anymoreLook around you. Your home is full of things that are easily turned into cash. Have a garage sale. If you have kids, consignment shops are great for selling grown-out-of clothing and toys. Look at EBay, Amazon.com and Craigslist to see what other people are selling on those sites. If you have items that are of interest to collectors, find the sites on the internet frequented by enthusiasts and see if they have a marketplace. You don't have to stop at things, either. Some blood banks pay for blood plasma, especially rare types and clinical medical research trials are also a way to get some extra cash.Sell your knowledge.Do you have a skill or knowledge of interest to others? If you can speak a second language, dance, do yoga, cook, make art or play a sport, contact your local recreation center or place of worship and see if you can teach a class. Are you more of a scholar? Online tutoring companies are always looking for qualified people, especially in the areas of science and math. Do you really, really know your subject? Online publishing has put writing and selling a book within the grasp of more and more people. Whatever your interests and hobbies, opportunities abound for turning them into cash.Beware of internet money-making opportunities that require cash up front. These are almost always scams!Sell your demographic information.Companies are very interested in how consumers shop, and why they choose the products they do. Consumer Research companies are willing to pay people to take surveys and try products. There are many of these companies online, and while they do not pay a lot of money, you can often get free products to try.Today's economy is depressing for many people. It is easy to feel powerless and to lose hope. With a little foresight and some creativity, you can find ways to make a little extra money to get bills paid and have a little fun as well.