Earplanes are little rubber tubes about an inch long that you stick into your ear(s). I'm not sure how they work(I guess they equalize the air pressure?) but they have worked wonders for my children. The first time my son had a problem with his ears we were unprepared and the flight attendant gave us styrofoam cups with wet,hot paper towels in them and had him hold these on his ears. This worked just fine. I found the Earplanes at Walgreens.