A funny little detail to attend to before moving back to the States - rolling loose change. We've collected quite a bit. As I watched the girls counting and rolling I realized why we have so much. There are twice as many coins in Europe as in America.
In the States we have the penny (1), nickel (5), dime (10) and quarter(25) - 4 different coins. The Euro coin denominations are 1, 2, 5, 10, 20, 50, 1 euro, 2 euros - 8 coins. The 1, 2, 5, 10 and 20 cent coins collect very quickly in the change bowl.Even after nearly 3 years here I still fumble around for coins in my coin purse. There are too many of them. The 1, 2, 5 are the same color; a dark copper color. The 10, 20, and 50 are gold. It is impossible to find the proper coin in a dark coin purse. The 1 cent coins are tiny! Smaller than a dime (for you Americans.)
I also think that having 1 euro and 2 euros as a coin, mentally diminishes its value. It doesn't seem like what it is (especially if I think of it in dollars.) Bills seem like "real" money or something substantial. But the coins here can add up very fast into something "real." The first bill in the Euro is a 5 euro bill.
BTW, if you're looking to keep your kids occupied have them roll coins. My kids loved this. After the first day they asked to do it the next. They even asked about it in the car on the way home from school.
Read all the Little Differences here.