Spinal Column and Neurons Introduction Watch a one-minute video, " What is a Neuron ?" and a five-minute video, " Annie & Dan Talk About MS ". Activity 1 Your brain lives inside your skull, but it's floating in brain juice, or cerebrospinal fluid. Put eggs inside a plastic egg shell, one by itself and one with water, and drop them from a height. Check on the eggs, and see which is damaged. Activity 2 Make a model brain cell using playdough, or pom-poms and pipecleaners. Add the pom-poms and pipecleaners on to the anatomy model. Lunch Snack Eat those poor hardboiled eggs from earlier. Activity 3 Use pasta, cheerios, and pipecleaners to make a model of the spinal cord. Add it to the anatomy model.