Although one of the main features of this site is that they link you to buy things, they are still sharing many ideas. I thought it was interesting that they have a "permission to pin" button for pinterest. Check out the back to school "issue". It includes many things to buy, but also decorating, book, organizing, tech, and even clothing accessory ideas. If nothing else, it's fun to look at, and links you to some interesting teacher blogs!
Laura Candler's Reading Workshop page. I can't say enough good things about Laura. She is an outstanding teacher who has shared many great resources. She does sell materials, but offers much for free. Check out her file cabinet! This page has many free RW resources, including a webinar.