I have just been gifted with a puck of soap, and I have never used soap before. The question I have is where to put it; it is a refill puck. I have seen on the numberous vendor sites soap in wood and metal tubs which are covered. I have also seen mugs, which I am guessing some people put the soap puck into. I know I need something to put it into to start building a lather - perhaps a smallish latte cup. But, after building the lather and shaving, does the puck need to be covered? Help!!! Thanks, John