Hi bacpacjac,
So what is the tallest/widest cooking container you have?

Pick your dedicated boiler (say a bottle)
and wrap aluminum foil/flashing around it,
this is your pot skirt (more than a wind screen)
attach to bottom a metal can/cup with skewers,
this is your grate / wood stove / pot stand
you can put soda can stove inside this cup

Links to construction/theory/fancier version in this caldera cone thread