Until now I've been using a Staedtler Pigment Liner for my ink lines, but my lines were so stiff. My problem, not a problem with the pen. I pulled out an old Osmiroid calligraphy pen and inserted the copperplate nib.
It certainly loosened up my sketches, and I only seem to care that the lines land somewhere in the general vicinity of where they should be. I see that as progress.
I'll work with this pen for awhile, then go back to the Staedtler and perhaps my lovely collection of Rapidographs.
Surprisingly, a 20-year-old bottle of Pelican ink is still viable.
The music box has a touch of watercolor pencil, and colored pencil was used with the garlic keeper.