There seems to be a new street art movement sweeping the neighborhood (or perhaps just 23rd St), and you’ve still got a chance to get in on the ground floor! And you don’t even have to have a real plastic bag–even a torn tortilla wrapper will do!
Whether it’s commentary on environmentalism (Greenland’s ice sheets are melting!) or consumerism (weren’t plastic bags outlawed in SF?), or merely the work of some bored homeless dude is up to you, but you’ve at least got to admire the variety here.
Also, FYI, none of these can be recycled in your apartment’s street-side bin (only HARD plastic can be), so tell your dumb housemates to stop throwing these in with the recycling!