The Brooklyn Paper reports:

The Park Slope Civic Council is not only backing a “Buy in Brooklyn”
campaign, but it’s putting 400 umbrellas in local stores so you can
grab one if it’s raining. The whole thing is on the honor system,
people, so don’t screw it up! The launch is on Nov. 13 at the Community
Bookstore (143 Seventh Ave., between Carroll Street and Garfield Place)
at 8 pm. Here’s hoping it rains so we can test out the system!