A friend of mine has just blogged about making some calm down jars for her class. They are essentially some gloopiness with glittery bits in so that angry or upset children can hold them and watch the glitter fall to calm them down.
This sounds like a great idea to me, and I may well follow her example and make some for my new class. If you want to see exactly how she made them, along with a couple of pictures, then check out her blog post: Calm Down Jars at Anna Halford’s blog.