Over the years, I've kept tiny sample jars for face cream, foundation and stuff. I refill hotel shampoo and conditioner bottles with my own (smaller than the travel bottles you can buy) and use travel size hair spray, deordorant, toothpaste, etc. A full kit of makeup and grooming stuff, plus things that aren't even liquid, like a razor and toothbrush, will fit in a quart ziplock bag and last 10 days at least. It is so handy to keep a ziplock bag at the ready full of everything you normally use, just in tiny sizes.