I've only read a handful of these, so going through this list should be fun!
Every middle school classroom should have this on the wall. Especially at this time of year!
Assessment Bulletin Board. The students can write something they learned on a post it note, and stick it to the door as they leave.
21st Century Icebreakers: 11 Ways To Get To Know Your Students with Technology | TeachBytes
How To Make A Movie Poster: A Template For Students
Words That Describe Someone's Voice
teacher humor! haha
close reading evidence posters for primary students