The past two times we've visited the mall Matilda has discovered these candy dispensers. I haven't yet told her about the contents, but I think she'll soon have it figured out. She is totally fascinated and spends 20 minutes at a time circling them, opening each dispenser to peer up. This particular one had a single Runt candy left behind, which drove her mad. As she circled the dispensers, checking each one, she would always come back to the lone candy, pointing with a questioning "This?"