The Mind Jar is a meditation tool to use when you are stressed. When you shake the jar the glitter (your thoughts) are all over the place. Watch them slowly settle while you calm down. From blog, "Here We Are Together".
Mind Jar -- meditation tool for all ages: "when stressed, overwhelmed, or upset, imagine the glitter as your thoughts/emotions. when you shake the jar, imagine your head full of whirling thoughts/emotions. then watch as they slowly settle together, and you calm down."