Yesterday I told Kilian to go change from shorts to jeans because it was almost time to leave. He sighed, and then kind of groaned and jumped up and down - kind of a quick mini-tantrum, but without tears or whining. I grabbed my camera and asked him to do it again, so I could put it on the computer for everyone to see. His eyes got really big and he marched off to his room. I'll be using this tactic again.