I have some helium filled balloons and a pin....time for fun. I smush and squeak the balloons and tease them with the pin. I take the pin and several holes in the neck of the balloons releasing some of the helium. I play with them and tease them with the pin while the helium is slowly escaping. Some of the balloons I pop with the pin before all the helium escapes and some I squeeze until they are completely deflated.