For my last cruise on 4/18 I packed this stuff in my carry-on.
1. One pair of pants
2. One polo shirt
3. One pair of socks
4. One pair of underwear
5. Laptop and AC adapter
4. Cell phone charger
5. Camera including USB cable and battery charger
6. Medications in the daily dose container and injectables
7. Travel Wallet: Extra credit card, other cards, air and cruise documents
9. In plastic bag: Travel size toothpaste, eye drops, shaving cream (easy to pull out at airport security.)
10. Extra dress watch
12. Compact binoculars
I found a Samsonite laptop carry-on that is one of the best I've seen. Multiple sections to separate different "things" and make it easy to pull out the laptop and get it back in at the airport without requiring opening the main compartment. Also separate section for meds and the plastic bag of liquids. This also makes it easy to locate, pull out and put back in at the airport scanner.