Share Go to a dollar store to buy props for class. with FacebookShare Go to a dollar store to buy props for class. with Twitter It’s a great place to buy Ping-Pong balls, cups, little bells, Easter Eggs, egg cartons, etc. All these props are great for acting out and demonstrating computer science concepts in class. More about this tip Tags Meaningful and Relevant Content External Source Interview with Seth Reichelson Other Tips By Other Tips By Seth Reichelson