www.onebrick.org
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Volunteer work gets streamlined at One Brick, a non-profit organizer of one-time projects in Chicago, New York, San Francisco, and Washington, D.C. (with additional cities to follow).
One Brick's ethos of "commitment-free volunteering" means you don't have to parcel out a certain number of volunteer hours, or agree to be available each week at a certain time. It couldn't be easier: If you've got three or four hours to spare, browse the organization's calendar for an upcoming project that piques your interest-whether it's helping stock a food pantry, sorting baby gear for underprivileged tots, or restoring a wildlife refuge-and sign up. No fees, no fuss, no shamed-faced morning afters. ::One Brick
Difficulty level: Easy
