So many great ideas! Those little "free" bags seem to multiply like bunnies around here. I use them for everything from my jewelry, make up, first aid, cords...
I also have some of the dry bags from jujube I use those for pretty much every port day. But, I also take a bunch of baggies in various sizes I keep in my day bag for either wet items, electronics, or I like to take travel size deodorant, comb, hair ties with me to port and excursions.
A couple of essentials for me is waterproof mascara, 3 minute miracle conditioner and colored lip balm.
We are going on an 11 day Alaskan cruise in June and I'm mentally trying to reduce what I feel like I'll need.