BostonCentral is a great online resource for finding fun family events and activities in the Greater Boston Area.  You can seach their website and find something cool to do with kids or visitors every single day.  They've got a great daily event calendar as well as their free weekly e-newsletter that you can sign up for.  it comes once a week and it highlights great family events all around the Boston area.  It's how I plan our adventures every week.

You'll also find cool links to family friendly shopping around Boston, info on towns, schools, utilities....you name it.  And they say Boston isn't organized......