Whimsical Pottery & Affecting Jewelry...and a great friend of The Hurricane Deck.
In our opinion, the gold standard.
Amy Littlejohn Designs (Link soon)
Fine jewelry, watercolor paintings, room decor. There simply isn't an artist more talented, nor goods made with more care. Plus she is my wife.
Dating to the 1930's, the fabled Blackwing 602 was used by John Steinbeck, Leonard Bernstein and Chuck Jones, who used one to draw Bugs Bunny and other Looney Tunes characters. Originally made by Eberhard Faber, it fell out of manufacture, but was resurrected by Cal Cedar under their Palomino Brands label. If you haven't tried one, you should.
Not the cheapest, but the best.
Uncommonly-talented graphic designers for countless businesses large and small. And the nicest, most helpful people you'll ever meet, even if you live a hundred years.