Whenever I travel I look for the best way to minimize and go lighter. I try to always travel with just a carry on suitcase. My favorite is the Lipault 4 wheel 22 inch carry on. Super light and flexible so you can cram anything in it. The four wheels are super important, what ever brand you buy, because you will be able to get through any aisle, and in and out of any bathroom stall with ease. I also own the Lipault 28 inch packing case, for when I travel on long haul flights. No point in getting the 26 inch medium size, since you have to check it in regardless, go bigger.
Next, the hairdryer! When you have a lot of hair it's the worst to have damp and frizzy hair. I love the Conair Travel Smart Folding Hair Dryer. It's so light, small, and fits in the palm of your hand! You can also adjust the voltage setting for international travel.
Lastly, two other items I love, especially when you know you may be buying alot on your trip. The Samsonite Tote-a-ton Duffle Bag is very light and folds right up, slip it in your carry on just in case, and check it on your return trip. I also bring the Orbsgo Digital Luggage Scale. This way I can check the weight of my luggage in the hotel room so I don't have to be stressed out and rearrange my luggage at the airport.