I found Chalk Talk while looking for 100th day of school ideas, and have been going back to it ever since. The author is an experienced teacher with tons of great ideas, and the skills to put them on her blog in a useful way for other teachers.
Check it out!
Elbows, knees, dreams 
There is a new place to share your ideas, thoughts and funny teaching stories with other Teachers Anonymously. Check it out today AnonymousApple.com