This awesome non-profit runs free public sails around Lake Union every Sunday on wooden sailboats and some small steam boats. Arrive early on Sunday to sign-up in person for your spot throughout the day. This is a great activity, even for groups up to ~12 people.
Yes, go see the fish throwers, but make sure to check out the shops downstairs! Our favorites include: BLMF Literary Saloon, Old Seattle Paperworks, and Perennial Tea Room. The market also has a beautiful new patio overlooking Elliott Bay, which is a great spot to enjoy a bite. Our favorite market foods include: Daily Dozen, Emmett Watson's Oyster Bar, Piroshky Piroshky, Beecher's Handmade Cheese, and Shug's Soda Fountain and Ice Cream.
This is a wonderful little used bookstore with a nook to house the children's section, a spiral staircase to the basement level, and bunnies and cats to visit. After visiting this shop, head to the Fremont Vintage Mall across the street or the Sunday Market for a flea market, crafts, and food trucks.