My wife got some similar wristbands when she was pregnant, and had horrible morning sickness. We went on "Prince William Sound Cruises and Tours" and knew that she would be on a boat all day. She already had horrible morning sickness, so we didn't want to take any chances. We got a simple wristband at the pharmacy section of the grocery store that has some sort of bead that gets place on the inside of your wrist. The elastic band keeps pressure on the bead, and somehow it works. No batteries, no shock thereapy, but it did work. Amazing!

I once flew a guy to CO Springs to pick up some explosives for ballistic parachute deployment. Along came a kid named Avery. Avery got sick right away so we landed in EKO and got some hefty cinch sacks. Avery hurled all the way to Vernal, Utah where we got lunch. Avery had a chicken fried steak and continued to puke all the way to COS. The smell of Avery's puke permiated the cabin and pretty soon me and Dave D were hurling in the cinch sack too. We walked through COS with the dynomite and got a special VFR out of there and dropped Avery off at Durango. Came back through Canyonlands National Park. I ran in to Avery a couple years ago at a gas station in Reno-he recognized me-I would not have recognized him... I asked him if he was done puking and he said " ". Shaggy dog story but true.

If your flying with people prone to motion sickness, banking close to the ground will usually get them green and quiet.

Best to get some altitude where the ground reference slows down. Have them look at the horizon and aim an air vent their way and they will calm down. Always carry a couple of the heavy duty, one gallon zip lock bags just in case. Those puny airsick bags are way to small.

Had a guy bragging that he never got sick on carnival rides. Told him to grab a bag and look out at the wing tip while I rolled the aircraft. He puked.

Chuck Yeagar said that he got sick and threw up the first three times he went flying and look what he went on to achieve.

I'm certainly no Chuck Yeager, but in flight school I kept getting queasy in the TH-55. I was a fixed wing driver before, but you could see out all the way to your feet in that little helicopter, besides it moved in new and odd ways for an airplane pilot. I was OK as long as I was flying, but if I wasn't watch out. It was illegal, but my I.P. told me to take dramimine until I got used to it. It worked, I got used to it. In rough air or a lot of manuvering, I still get queasy if I'm not the one on the controls.
on edit: If you threw up it was considered a precatuionary landing and was one of the quickest ways to flunk flight school. So when you got sick, you got to choke it back down and/or swallow it. You don't have to do that many times to wonder just what your'e doing in the cockpit, excuse me I mean crew compartment.