I've noted some of the bigger differences that we've noticed here in NZ - the language, politics, personal interactions - but there are small differences too. Lightswitches are "upside down" - this one is in the 'off' position:
and all outlets have an on/off switch (these are flipped to "on"):
There is even an on/off switch for the stove:
And finally: the toilets. No, the water does not flow in the opposite direction here, contrary to popular belief. The toilets here are different from American toilets in two ways: (1) there is a two-flush system and (2) the water level is very low in the toilet bowl. The two flush system is quite a popular topic on American ex-pat blogs, so I feel a need to cover it too. ;) As you can imagine, the first flush button - less water - is for "#1" and the second button - more water - is for "#2".
The toilet bowls are smaller and deeper, with less water. I can only guess this is because all that water is just not necessary: