I don't really know. Something symbolic would be nice, but in my mind it would be like a tungsten carbide ring with my partner's name in binary or something. Economical, long-lasting... but I'm not sure. That's a bridge quite a ways away for me.

The lack of social traditions and traditional obligations seems daunting at first but it's kind of fun to be unencumbered (especially when I read reynir's replies and go white-faced from the ridiculous sexist pressure put on men and women to be macho and feminine still today).