Using Toilets With Lots of Water
Most foreign toilets have very little water in the bowl, which is a strange concept if you aren't used to it. But as it's been said, America is falling way behind on conservation efforts. One of the easiest places to start is in the bathroom by using less water while you shower, brush your teeth, and yes, even use the toilet.
Walking With Huge To-Go Cups
America runs on caffeine, that's no secret. But the need to carry an extra-large cup with us wherever we go seems a little addictive, doesn't it? We're one of the only countries that have normalized this. Drink your coffee at home!