No gripes about the Trangia quality, but round is wasteful for packing. I think you'll get more gear inside a rectangular tin like the one Frenchy shows.

If you don't need the lid... have you considered a U.S. G.I. Canteen Cup? I can find them in aluminium and sometimes in stainless steel. They're inexpensive enough to carry a few, with junk stuffed inside. Not rectangular, though.
http://www.actiongear.com/cgi-bin/tame.exe/military/level4.tam?M5COPY.ctx=7968&M5.ctx=7968