If the younger members of the family are getting restless, take them to Childrens Museum of Skagit County. With plenty of interactive exhibits and displays, this place makes learning exciting.
There's a charge to enter this interactive exhibit for kids, which is located in Burlington. But there's more to see around these parts than just Childrens Museum of Skagit County. Tulip Town, Lincoln Theater and Cascade Mall are also worth adding to your itinerary.