Another good addition is cord with a few different sized wooden or plastic beads that slide back and forth on the cord, and heavy fringe trim that you find in Home Dec (trim fringe short enough that they dont get it knotted around their fingers if you can't find shorter fringe. My Mom was a thumb "twiddler" & hair twister. If she didn't have something in her hands she would clasp her hands and circle her thumbs around each other constantly or twist her hair. These two items helped control that some.