Until recently, I did not understand the difference between a shaving mug and a scuttle. It was just yesterday or the day before where I came across a thread that enlightened me on the difference. For those who don't know, a scuttle has a separate chamber below the lathering bowl where you put piping hot water to keep everything nice and hot.
So today I make a run to goodwill, where they have shelves upon shelves of cups, bowls, and other kitchen goodies. In my searches I found a two crystal bowls that fit really nicely together, and the larger one was heavily carved giving it a very classy look. In the end I decided for something a little less classy, but more functional. I found a Tabasco bowl that fit the smaller one even more snug than the crystal bowl, had a wider base for more stability as well as hold more hot water, and was ceramic so it would hold the heat better for my 45 minute shaves. :)
Here are some pics
Separate
Together
With some other shaving goodies.
Not bad for $5!