Thanks all for the feedback, I appreciate it and have been busy trying out some of your ideas. I've made three pairs of cufflinks, a men's ring and a pendant that I think might appeal to men. Let me know what you think, are these what you had in mind?
I will note also that other suggestions I got for men's jewelry include tie clip (with matching earrings, wedding gift!), hat bands, belt buckles and bolo ties. I'm working on making some samples of those -- stay posted!
I'm using this page to talk about the art and joy of working with glass and silver.