Seabands are handy for many things, like being driven on a windy road (somehow if you're driving you don't get sick) and airplane turbulence and boats in choppy waters. Now that you've learned the trick, you can do the same thing without the bands themselves if you forget them. You found the pressure points, now just use the thumbs of the opposite hand to hold the same points. Yes, you can do two hands. Cross your hands, palms facing each other and use your thumbs. This works great for brief bouts of air turbulence, or a sudden urp during pregnancy. I sure wish I'd known about them then.
Glad they helped and good luck.
Artemis