A few years ago I noticed that people will dispose of unwanted stuff next to fire hydrants. These items are never put in the middle of the sidewalk, and only rarely, on a corner without a hydrants.
I only have a vague theory about why people do this. Not the throwing stuff on the street aspect. It’s clear why that happens: people either put it out on the street convincing themselves it is a somewhat benevolent notion because someone will want it, or, more likely, they’re just dumping it knowing sooner or later the city will pick it up.
But why next to a hydrant? I think it’s because since something is already on the street, i.e. the hydrant, then it is fair game to put other stuff next to it. This theory does not apply to trash cans, as putting trash next to a trash can would appear lazy or redundant.
I started taking photos of these objects.
Occasionally when I’m taking people out on a tour of San Francisco, I notice abandoned semi-junk next to fire hydrants. I will often, usually, ask my guests permission to stop the tour clock for a minute while get out of the MINI and snap the display.
It is possible that on your private tour of San Francisco, you may have an opportunity to indulge me in my hobby.