Art in the service of Spirit doesn’t have to be big or complicated, and it doesn’t have to be overtly ‘spiritual’. Using it to make people’s life better in small ways is as valid as anything.
Creating public messages for positive change is something people have been doing for a long time. Graffiti, flyposting and stickerbombing have all been used for those purposes. One campaign, Operation Beautiful, has set out to counteract the constant judgement that women on our culture experience around their looks – one Post-It note at a time.
Leaving art around in that way can be a slightly fraught business these days, though. Depending on where you leave it, you may find yourself in trouble for either littering, criminal damage (there’s some debate as to whether Post-It notes actually count as damage, but you can count on some over-zealous official to interpret it that way sooner or later), or suspected terrorist acts. Scary, but true. Since getting into that sort of trouble kind of defeats the object, I recommend leaving art where it’ll definitely (sooner or later) be found, won’t get damaged in the meantime, and won’t get you into any trouble.
Inside library books.