Last week I set up a game table using these pigs from a Pig Ping Pong game.
The object is to squeeze the pig so it will puff out air and move the pom pom.
It took practice to find the most effective way to squeeze it.
Once they figured out to squeeze from the top and bottom they were able to move the pom pom around. The object of the game changed to get as many pom poms to other side of the table before I was able to puff them back.
The puff pigs are a great calming toy too. Just puff away your stress.