In the weeks leading up to Shavuot, get your kids excited for Matan Torah. On a large sheet of brown oaktag, cut out a large Har Sinai. Cut out small flowers out of construction paper. Each day write a good deed your child has done on a flower and paste it on Har Sinai. The flowers can lead up to the top of Har Sinai and reach the summit in time for Shavuot.