I use a large cappaccino mug with a small plastic bowl that fits inside. Fill the mug up with hot water and mix the lather in the plastic bowl and then float it in the mug. I think I remember someone over on the B&B forum that used something like this however, he set the whole thing on a cheapy mug warmer that he got from WalMart. I've been thinking of trying this out, if I ever get around to it.

-Pary