Tinderbox can create AtContext lists automagically provided that you
give it a hint.  I try to be consistent in naming my next actions with
a context word such as "call" "buy" "waiting" etc.  I've created an
agent for each context which looks for the appropriate context word in
the title of each NextAction.  If it finds the word, it adds an alias
to that NextAction in the appropriate context list.  The neato part is
that with one menu command, all my context lists are exported to
individual HTML files which Plucker picks up and puts into my Palm!

(I'm finding that I use my Palm less-and-less for data input, and more
just as a compact and convenient reference platform.  I use a
HipsterPDA for input because it's faster and it doesn't crash!)