In November, Jamaica Plain News reported that smart receptacles for cigarette butts would soon be coming to Centre Street. These Sidewalk Buttlers are now up. Each box bears the name of a local business that helped sponsor the project. The boxes are inconspicuous, so you might not have noticed them yet. "I think that they’re really helpful because I do smoke and there are not always trash cans nearby," said Ari Barrett, who works at Caffé Nero.