I think I've mentioned CaptainBonobo before, he's an iphoneographer I met on flickr who is spending a year finding faces and in following him, I occasionally find myself looking for them too.
2010: The year we took photos, week 16 'and relax...'
I find looking at lines, curves, repeating patterns, geometric shapes soothing. I know it's weird, and call me a geek but there is something in the simplicity that's beautiful.
There's a bit of a 'who can make the longest shadow photo' going around the iphone photography community at the mo. I haven't done one of the longest but it gave me the idea.