This would make Gilgamesh very happy.

An elegant weapon, for a more civilized age...

A few others have mentioned fountain pens, but all new ones. Older pens, in good condition with decent quality to begin with, will blow away new ones for writing quality. I'm currently making notes (for my latest internet startup) with a red ripple hard rubber waterman 52, ~1924 but pretty much never used until I got my paws on it. It's a heavily flex nib which means I can write with it almost as a needlepoint for fine notes, but can still get bold broad strokes at any time I want for effect and flourish, and for signing funding documents. It's unlike any pen most people under the age of 50 or 60 have seen, and no one tries to borrow it. I can change the ink color any time I want.

Slightly more modern, parker 51s from the silver age of penmaking are widely available, reliable as all get out, and can be had in XF nibs. They're not flexy, though, but once given a good cleaning and possible replacement of rubber parts, will last another 60 years.