If your child is like mine and time-outs only cause a bigger eruption of emotions and never seem to work the way intended this can be a great tool. When Emma needs a moment to herself (to put in nicely) I ask her to sit with her calming jar for a few minutes and come find me when she sees most of the glitter fall to the bottom. She usually starts off by giving it a good shake, this helps get some of that frustration out. Then she sits memorized by all the glitter falling to the bottom. By the time I get my over tired and emotional child back, she is ready for a cuddle. Yes, it’s not magic, but it seems to help smooth things out. It is actually pretty relaxing for me to watch as well.