Crafts, drama and music are good channels to use. Craft ideas, such as making a small gift for someone for the holiday (from greeting cards to little dolls for a niece or friend), drama activities such as skits, plays, dialog role play, and music (working with pop songs for kids to sing and act out - see article with lists of pop songs on this website) are the direction that will keep everyone interested.
Games are a possibility, but they last for short periods of time and tend to make many students act up. Keeping the class busy, hopefully even intrigued, and producing a result through physical activities such as music, craft and drama will keep everyone motivated. Happy holidays!