From Fast Company to the National Design Triennial, the indefatigable Candy Chang will reorganize your city, block by block. Now she’s got a great piece smack in the middle of this month’s issue of GOOD Magazine: a placard for your doorknob that’ll help you meet your neighbors (and possibly get things from them). One side says, Please Disturb! and allows you to list the things you have to loan (an extra ladder, salad, ammo, etc.) The other side says, Can I Borrow? and you can list the stuff you need. “Our neighbors have a lot of resources, skills, and odds and ends that we can share, borrow, and trade,” says Candy. “Think of it as an invitation or a low-tech status update for your front door.”

On newsstands now. More from the issue here. For the full Chang experience, you should also follow her on the twitters. And keep an eye peeled for further adventures in neighborhood design via Civic Center, which is like the Voltron of socially constructive design, except it’s not a Japanese robot.