Ted,
It's a Snow Peak Titanium Trek 700 Mug I found on sale at REI about a year ago... pricey but very nice. The SVEA just slips into the cup upside down and sticks out about 1/4 to 1/2 inch. The base of the stove is just barely too big to go in.
Snow Peak Titanium Trek 700 Mug at REI.com
I love the semi helicoper sound my old stove makes at full rip, brings back lot of good memories!