I like to use these aluminum bottles for Supercats rather than the cat food can. You can cut them to a larger size and get more capacity. Here are some I made (the black ones are painted with heat-resistant paint):

http://www.freewebs.com/jasonklass/myblog.htm?blogentryid=1297303

http://www.freewebs.com/jasonklass/myblog.htm?blogentryid=1121987
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Gear Talk There's no such thing as having too many sporks!

Backpack Flyfishing Tight lines,light packs