Firstly. You're right face lather is best lather. That means for samples it's about how to load so you can face lather properly.
DJ and Walden make good points but my tuppence is the most important because it has a cheese based bonus.
You see the lid from another tub will workbut what works just as well is the little ceramic dish that comes with baked Camembert. It's a good size, and the glazed ceramic is nice and smooth and easy to load from. Plus you get the added benefit of having to eat a baked Camembert to get one.
My job here is dine