The Lodge and Falls are a really nice walk if it's not too cold! The falls should be flowing in November from the rain fall!
Take a nice ferry ride over to Anacortes or the San Juan Islands! Carly's favorite place in Washington is Roche Harbor. There's a cute hotel, some shops, but views are incredible and worth the ferry ride!
Downtown Kirkland is always a good idea. The shops are fantastic, the people watching is even better. Zoka coffee, Purpose boutique, or just a walk along the waterfront is peaceful. Bring a jacket!