On a daily basis, the only jewelry, etc. I wear these days is a gold Seiko which my grandmother gave me as a high school graduation gift.

I used to wear my grandfather's gold university ring, third finger right hand, as well (we both graduated from the same school and both received a BS degree - his in business, mine in computer science. I had my initials and grad year engraved inside next to his initials.) It's a little too much for where I work at the moment.

When piping, I substitute a silver Celtic cross ring for my grandfather's.

Occasionally, I'll wear my high school class ring (I had it resized several years ago), if I feel nostalgic, or will be doing something in connection with the school.

I've also been known to wear a pocketwatch when wearing a waistcoat, but I still don't feel completely comfortable doing it. It's not something I grew up seeing much at all. (My grandfather, on very special occasions, might have worn one. My father wore/wears very little jewelry at all.) It's also not seen often around here, at least I haven't seen it often, but then I don't get out much either.

I'll also wear a single lapel pin when wearing a sport coat. Usually it's my National Eagle Scout Association pin (the NESA logo), but occasionally it's simply the silver Eagle from my award presentation kit.