Great place. I used to work near there and it was a nice way to blow off steam. It's actually the second best toy store in Seattle, though: Top Ten Toys is even better.
Keva wooden blocks are pretty sweet. My nieces and nephew got a giant block for Christmas, and I spent most of the day building towers with them while everyone else cooked dinner. Very simple design. A set of just one size block. http://www.kevaplanks.com/
Sweeeet! Sounds almost as fun as this one... Courtesy ----->> http://plancksconstant.org/blog1/2009/12/post_4.html .