Best family fun deal around Boston?
Nothing beats Friday nights at the Children's Museum for the value: four floors of endless fun for $1 each. Plus, there's a separate area to explore for my one-year-old.
Any other suggestions?
The Arboretum is a great place to visit any season. During the warmer months bring bikes and scooters, and pack a picnic, or go sledding in the winter. See the trees blooming in the spring, or changing colors in the fall — it's like getting close to nature without leaving the city. And, it's free.