Ice Is Nice
Strong, non-routine sensory input can interrupt some acute mental health situations like being frozen with stress or existential despair. My kid is supposed to take a medication every day and often that goes smoothly but sometimes expectation and anticipation can build up to make it impossible. So today I took the cat-shaped lunchbox ice pack out of the freezer, carried to my kid and said "Hold this on top of your head while counting down from 10 slowly." My kid did so then took the medicine. I am quite certain that using this trick too often will make it stop working.