Who was it that said something along the lines of "you should be able to walk outside of your house and make a good photo without going more than a few steps"? I think it was Imogen Cunningham but I have a shit memory, so it's probably not her and the quote is mangled in any case. But you get the idea.
I'm a pretty big adherent to that philosophy. I usually take my photos within a kilometer or two radius of my house. I find it pretty meditative to search among the stuff I see on a fairly regular basis. It could be the light, a texture I may not have noticed, something new that's been built, etc. The point being, while it's great if you're a person who travels the world or something crazy - you know - good for you, but most people don't do that. So you have to work with what you have, or more accurately, where you are.
I've passed the wall in the below photo set a million times. It's about a block away from my place. I shoot it every now and then, but usually it's a one off shot. Today I noticed the graffiti on the right first, then wandered down a bit further and saw the caution sign and finally a lil further down that bar thing. The idea of the triptych appealed to me when I got back and there it is. Now, maybe the shots aren't you're cup of tea. I realize not everyone likes staring at walls. But, it pleased me and put me in a good mood.