In this activity that focuses on attention and speed, try to get the same colored object faster than your opponent according to the color that appears on the tablet. Even without a tablet, one person can manage the game by saying the colors.
How about a fun contest. Moreover, you don't need to be fast for the competitors. You can make the competition even more fun by adding the game of stone, paper and scissors.
Let's put the roll toilet papers on top of each other. To compete as two competitors, let's throw plastic balls on our own goals and try to overthrow the rolls. The first rolling wins.