This is an activity I have used in class to practice the bones of the skeletal system. I bought a beach ball and used a permanent marker to write the scientific names of the bones scattered around on the ball. Students stand in a circle and toss the ball to one another. The student that catches the ball reads aloud the name of the bone that his/her right thumb is touching. All the students then practice locating the bone on their bodies.
My students have always enjoyed this activity and it is a quick and fun way to review the bones. I think this could easily be adapted for using in most subjects and grade levels. Let me know if you have any suggestions for other ways to use this activity in the classroom!