Pets, for instance, have been shown to reduce depression and boost self-esteem.
Art provides an outlet for expression.
Music stirs memories, emotions, and when accompanied by singing, encourages group activity. Create guidelines for all activities in order to ensure their effectiveness. Identify music that's familiar and enjoyable to the listeners. Use music to create the mood you want. Avoid using crayons or anything else that might be demeaning or seem child-like.