My favorite place to buy supplies is the UW Bookstore on 15th Ave and 43rd St in Seattle. They have lots of different tools (including Speedball and various tips), and several different kinds of carving media (including MasterCarve, my personal favorite, in many different shapes and sizes). They also have a ZILLION different sizes and shapes of little notebooks, many which are quite reasonably priced. You can park for free in their lot right behind the store if you get your parking validated inside (up to 2 hrs). It's not very close to my house, but it's pretty easy to get to if you go on the weekends.

http://www.bookstore.washington.edu/

GG