Today I was starting to load for my .204Ruger when I realized that my powder funnel wouldn't work. On my desk was a Bic pen...so I pulled the tip and ink tube from it and cut the front section of it where it tapers toward the point, about 1cm worth of plastic tube.
Then I got my RCBS case mouth reamer and reamed both ends and glued it into a old powder funnel I wasn't using anymore. Presto, a .204 and down funnel!