As a writer you always need to be on the look out for ideas and possibilties. However rather than limit yourself to writing ideas, also look out for visual ones and particularly photo opportunities.
There is a large and growing market for photos and, thanks to the internet, it is easy to upload and to sell them, particularly to stock image sites. Some have also sold their photos - particularly of historic sites and buildings - on ebay or for use as greeting cards, calendars or even themed screen savers.
Photos you take can be used to illustrate articles or, if you take an amusing snap, sell it to a newspaper or magazine on its own.
For more details on how you can profit from your camera and the type of pictures in demand, have a look at www.selling-photos.com At the moment the report comes with a free 110 page guide on how to make the most of online writing opportunites and which makes a great bonus for writers.