Too lazy to actually get out and take pictures? Then you might want to check out Photosketch, an interesting research project by researchers at Tsinghua University. Starting with a basic sketch consisting of shapes and tags describing what you want, the software searches a database of images and finds things that will fit.
Their site is suspiciously down, at the moment, however kottke posted a link to their research paper. Hopefully this actually gets released!
[Thanks Stuart!]
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