Stuffing envelopes can definitely not be considered as one opportunity that can be taken full time. There is only one reason for that. In some months, you may find companies may have a lot of work for you, and in some, they may not have any work for you. Stuffing Envelopes at Home thus can be an opportunity that you can make best use of if you can take this work part time. It is not a tough job and would require only 2-3 hours of your time daily.