Cut a long, rectangular scarf from the fleece, about 5 feet by 7 inches.
Use the chalk to mark a grid on the scarf (the scarf above has three columns of half-inch vertical slits spaced about two inches apart; the scarf at right has four columns).
Cut open the slits.
Cut narrow strips of fleece, about 1 1/2 inches wide and a few inches longer than your scarf. If the fleece isn't long enough, overlap the ends of two strips and secure them with fabric glue; let the glue dry a bit before proceeding.
Weave the strips into the slits of the scarf. Tack the ends of the strips to the scarf with glue.
Tips:Instead of gluing the strip ends to the scarf, cut the ends of the strips and the scarf into fringe.Give the seniors an activity: Leave the strip ends unglued and add a note with your gift explaining that the strips can be rewoven to create new patterns. Remember to include several extra strips in various colors in your package.