This trick to help your kids while flying... seems smart enough, but could go all wrong.
If your child has trouble popping their ears while in flight, hand them a balloon.
Have them blow it up two times, then deflate... and repeat.
It helps the ear canals to even out & relieve pressure. Cool.
BUT.... if that balloon pops on that flight you are going to have a whole lot of stressed out & unhappy passenegers.
Proceed with caution.