The following food items I always bring with me when I return from a visit to the U.S. I will never just eat pasta, I need a wider choice, and as I cook in our home, I make sure I have what i need.
Corn Tortillas Paris has factory, but they never get here to Italy. Bring LOTS if you love Mexican Food.!!
Crisco (Italians don't know what this is)
Vanilla (expensive in Italy, and in small quantities)
Cheddar Cheese (Great Britain has this) I have seen some in shops here, but VERY expensive.
Dark Brown Sugar (The heavy type in the U.S. is not the same as the type from the Philippines found here.
Tortilla press
Measuring cups
Measuring spoons
Cooking knives are expensive here
I brought over a kitchen aide mixer on one trip, then a set of pasta blades that fit it on the next trip. I had to build an electronic converter for it as the small ones sold in shops could not handle the conversion.
Italy has all the appliances, televisions, etc. that you find in the U.S. Usually more expensive here
Nike shoes (etc.) are cheaper in the U.S. It seems that all shoes are more expensive here.
All craft items like watercolor paper, paints, brushes I buy in the U.S. Art shops here have few choices and always in smaller quantities for a lot more money.
You won't find hobby stores here much. My wife does cross stitching and she buys online.
Your cell phones (to buy) cost more here, but the monthly charge is hugely cheaper.
Clothes are more colorful in the U.S. Italians like to wear black jackets, etc. Therefore, if you like to wear bright colors, bring it. Hawaiian shirts......forget it.Â
Cook books in English.Â
Keep a bank account in the U.S. Most banks here charge to have an account. You will need it if you are having retirement funds coming to you every month. I just use the bank O Mat at a local bank to get money that I need.
You can register to vote in the state you are leaving, but can only vote for Senate and President.
Renew your driver's license in America so that it will last a long time. Go to AAA and get an international driver's license, which lasts one year.  You will have to get an Italian license after one year here. And this is REALLY difficult as you take a difficult test, and then will have to do a driving school, and another test. GRRRR.. I just passed...
I hope this helps someone...
I write a blog about my American life in Italy, some of it can help you be prepared for the differences.
The driving test, the food, and the life style in Italy..
Find it at the link below, just paste it into your browser.
Dave Lester
whatfillsmyplate.blogspot.it/