As previously noted, Billy and I have a good routine going with pom-pom hunting these days.
Billy has, unfortunately, learned an associated trick -- he invites me to the hunt by sitting in my office door and serenading me with catzilla sized meows. Then if (when) I get up, he leads me off to the pom-pom stash.
He'll occasionally meows to be fed too, with an alternative destination of downstairs. But he doesn't do this as often, and his timing is usually not far off the official schedule. So "feed me" meows don't stand out as much.
I think he could meow louder (for all their volume, these are calm almost happy meows), but for the sake of my hearing I don't want to find out.