Get paid to mystery shop! Technically not Work from Home, but very flexible - And you are, in a sense, your own boss. Mystery shopping / secret shopping is used by companies to gather information on the services, and other information, of retail companies, restaurants and many other types of establishments.
Mystery shopping requires going to an establishment, chosen by the company you are working for, and following the guidelines they set forth. Usually companies will have the mystery shopper / secret shopper perform jobs such as buying a product, asking specific questions, etc.
RQA, Inc- Preforming various tasks like Product Retrieval, Quality Assurance Auditing and more.
A Top Shops- Going to various places like stores, movie theaters, restaurants, etc; checking out what service and the environment is like there and makes reports about it.
Mystery Shop- Mystery shopping Association has great listings of companies and jobs.
Volition.com: Mystery Shopping- Lists numerous mystery shopping jobs with descriptions about each one.