the thing I'm most concerned about finding in travel size is sunblock, but I guess i can put that into some 3 0z containers I can buy. between two carry-ons (one for me, one for my son) we will have two 1-qt ziploc bags. Mine will contain travel sizes of shampoo, conditioner, toothpaste, lubriderm, oil of olay, and sunblock. His will contain shampoo, conditioner, and sunblock. Darn it, I'm determined to travel with only my purse and a carryon and my son with a carry on. For a 4-night cruise and 2 nights in a hotel we will wear our clothes twice. I want the convenience of no checked luggage and self-debark ahead of everyone else.