If you are underemployed, your paycheck might not be enough to pay the bills.

Or may you just want to make a little extra cash for fun money.

Either way, there are some great ways that you can earn extra money without getting another real job.

1. Do surveys or click links in your email.

You won’t get rich doing surveys or clicking links in your email, but you can make a little cash. I have tried a lot of these incentive type websites in the past and have only found a handful that are actually worth your time. For gift cards for everything from Amazon to Southwest, I suggest you join MyPoints and Swagbucks. You can even earn cash instead of gift cards with Swagbucks. Both are free to join. I’m not as big on survey sites because surveys tend to take a while to complete, but paid surveys at Survey 4 Profit are pretty decent.

2. Sign up to be a secret shopper.

Plenty of company pay secret shopper to do everything from buying tires to eating a three course meal. In the past, I have gotten paid to eat a meals at Longhorn Steakhouse complete with appetizer and dessert. The meals were also free. I have also gotten paid as a mystery shopper to purchase Krispy Kreme doughnuts, Papa John’s pizza and Clinique makeup. All of the items I purchased were free (the mystery shopping agency reimbursed me) and I got an additional fee to be a mystery shopper. It doesn’t pay a lot, but it a good way to get the things you would have bought anyway at no cost to you. Get started at Secret Shopper, Secret Shopper Company and National Shopping Service.

3. Sell products from your home.

If you like to sell, you can sign up to sell everything from Avon to Pampered Chef to candles. People even still sell Tupperware! The way these things typically work is that you pass out books or do parties in someone’s home. When you do a party, you get something for free – usually an item you are selling. You also get a small commission on everything you sell.

4. Sell off your junk or clutter.

If you have a lot of books, CDs, video games or movies, you may be able to make some great cash on Amazon Marketplace. One summer I made almost $800 clearing out my stock of DVDs, books and CDs. If you have other clutter, such as clothing, antiques, dishes, electronics, etc. you can head on over to eBay to sell your stuff.  Do a search to see if people are buying the items you have to sell.

5. Sell your photography to stock image sites.

Sure, it doesn’t pay a lot per photo sold, but if you have a lot of images you an upload, then you don’t need to sell a lot of copies of each one. There have been news stories about people making six figures from selling stock photos on these sites. Two you will want to check out are iStockPhoto and the Flickr Getty Images partnership.

6. Get paid to write.

If you have some writing skills, you can be an online journalist in your free time. Sites like Seed.com and Demand Studios offer the best pay, both of which are low by journalism industry standards. I have written for both and neither are a scam but the pay is small for the work. Sites like Associated Content, Helium, InfoBarrel and HubPages allow anyone to write and they pay in profit sharing via Google Adsense. If you are a SEO whiz, you may be able to earn decent money from this.

7. Market your hobby or craft skills.

A site called Bragadoo offers a way for you to market your hobby or craft skills for cash paying jobs. Pimp your skills – everything from personal training to cooking is being offered on this site. People then leave reviews, which can help you get more gigs.

8. Sell your crafts.

Instead of spending your weekends manning a table at a craft fair, you can sell your creations online at Etsy. Everything from jewelery to clothing to artwork to furniture can be found on Etsy.