Calendar: Great classroom organization tip! Put calendar numbers or words on large rings--everything flips. No more boxes/files to store extra numbers or words. Make a few blank cards on the rings too, so you can change things up when necessary.
Calming jar-tell child that they need a break and may come back when everything has settled to the bottom - I think I love this idea. Better than a simple time out for temper tantrums. some days I think that I need a calming jar.