One Brick

Genius!  Volunteering can be difficult; often you need to commit to a certain number of hours on a regular basis, which is perfectly incompatible with the eternally unpredictable life of a mother.  One Brick (www.onebrick.org) does much of the logistics and legwork of volunteering for you.  You look at their calendar, find what works for you, and show up.  Boo Yeah.