If you are trying to make some extra money in order to save some extra money (after all, it's tough to save money if you have none left to save at the end of the day!), you could consider starting your own blog.
The key to blogging is to find a subject you are passionate about. Something that you would enjoy writing about on a daily basis, and sharing with others. Experts in the blogging arena will tell you that niche blogging is a great way to go. The more specific your subject is, the better. Also you want to find a subject that is not overly-saturated in the blogosphere- easy to say, but harder to do.
You might want to consider setting up an e-commerce site where you set up an online store and sell products. In this case, dedicated server hosting is needed.
I know many people that run several blogs and/or websites, and do so full time. If you do fall in love with blogging (easy to do!), and set up several blogs, multiple domain hosting will allow you to host additional domains (different web sites) on the same account. A great source for researching web hosting is at www.webhostinggeeks.com.
Blogging can be fun as well as an extra source of income. I suggest starting slowly, with a subject you love to talk about...a hobby you are knowledgeable about...and once you get started, remember to post often to keep your readers interested and coming back for more!