Ver. 1 - "Leave-in-place" Bean funnel & Plug for Zassenhaus Box Coffee Mill

Anyone with any familiarity with Zassenhaus' box coffee grinders knows that their "half-moon" opening can be frustratingly tiny to easily add coffee beans through. This funnel is meant to partly improve the experience of adding beans to the grinder, though I can envision further iterations focused on extending further the outline of the funnel.

I designed the funnel to have a very close fit to the Zassenhaus' "half-moon" opening, so any minor tilt when attaching or removing it can cause it t