My friend Margaret Organ-Kean is an extremely talented artist, and she's put some Tshirts, tote bags, and posters on her website.
Margaret and I met during the World Fantasy Convention in Seattle in -- what? 1989? -- and then were part of the same APA. Later, when I unexpectedly became an art director, I contacted her, and she became a regular contributor to Marion Zimmer Bradley's FANTASY agazine, providing fabulous black and white work a bit reminiscent of the work of Aubrey Beardsley, and a couple of color covers. She's doing more color work now, which you'll see on her site.