Exter compression bags.

Best thing ever. I can get a week’s clothes in one of the large ones. Depending on the trip, a cheap, foldable duffel. Some people use IKEA bags for extra space (yes, you can check them). An air tag or tracker in every bag. I just got a Dream Traveler carryon luggage. I’ve been a Rimowa devotee but these bags are great. I might pick up the larger size before my next trip. Thin, cashmere/wool/silk shawl. If you don’t have it the plane will be insufferably cold, if you do have it you’ll find a way to use it on your trip.