Great tips. Ginger candies or ale are beneficial as well. Healing-Scents Anti Nausea/Motion sickness inhaler works as well. It's great for random times I get motion sickness like when they randomly opt to take the scenic route around Dad's (Lee's). It's small so it fits any size pocket.
I get anxious if feeling motion sick (a helpless, out of control feeling of sorts) and these help me not feel motion sick, which helps prevent those anxious feelings for me.