Sara's Toy Box blog--fun, with product trials and reviews. Most of the toys are natural and open-ended. Note that Sara has a section on the left side of her blog with discount codes to use on various toy websites.
http://saras-toy-box.blogspot.com/
A Toy Garden is located in Fair Oaks, CA, the town where there is a Rudolf Steiner training school and a huge Waldorf community. Sonya's prices on silks and play clips are hard to beat, and she always has something neat in her "clearance" section. Great ideas for things that you could try to replicate for play at home. There is a great "birthday" section with some fresh ideas for grandparents and friends who ask what your child might enjoy.