You must stop by for a caramel apple! If you buy a certain amount ($15 worth?), they give you a free caramel covered apple, a punch card, and token to use next time for a special discount. I enjoyed the Reese's and caramel covered apple - Yum!! Quite a selection with chocolate, nut, marshmallow toppings. They will graciously slice the apple for you so you can nosh on the go. It's of course cheaper to make at home but why not indulge since you're there. What a great topper to the evening after the 70+ minute walking tour in Pioneer Square. There is also a Starbucks either next door or across the way (can't remember - caramel on the mind) in case you need a coffee pick-me-up.
Oh yeah! Try the seafoam - I love that stuff. I don't know what it is but I love it. Be sure your chompers are in good order before you bite into it. :) Also, you will find it easy to spend over $20 in this shop...Be sure to take pics with the oversized pair of bears on the bench. Be a cheesy tourist even if you live in the area. :)