Wondering how to start a business? This writer built her new venture in 30 days for less than $1,000… and she’s already made nearly $7K. Here’s how she did it. - The Penny Hoarder http://www.thepennyhoarder.com/how-to-start-a-business-in-30-days-for-less-than-1000/
If you're great at writing or art, you might be able to earn some money creating graphics and/or prose for greeting cards. This page has a huge list of 47 companies that are regularly seeking submissions from freelance writers and artists for the greeting cards they sell.