I would take very little anyway as I am always trying to take as little weight as possible. I'd never take more than 3oz. More likely I'd repack to something of 1oz or less. This is really an attempt at eliminating the stupid baggie.
I will also try Dr. Bronner's Peppermint soap as shampoo and toothpaste substitute. If it works, I am golden. I am sure I can find a hair product that is good enough for the look I want.
If the Bronner soap tastes too awful, I will have to take some toothpaste anyway. This means the liquid barrier is broken. I might then as well keep my current gel/cream and other liquids, and not smuggle my shave oil through. That said, if the Bronner soap works well for shaving, I might not even need the shave oil.
I'd still smuggle cologne samples, though, as the solid stuff just doesn't cut it for me.
Till