watches, fossils are always good for a decent price
I sport a lot of top range time pieces (my faves my omega speedmaster pro and my tag carrera) but I have two low or middle range watches both are fossils, and they cost like $150 (my omega cost 5k) and for what it is its great. They look good, very stylish and look expensive, both of mine have a diamond at the top which girls seem to love. I rarely wear them out unless I just want to mix it up a bit but I think they work well, google fossils watches, I think I even bought them off of amazon or something.
rings there's a few great places on ebay to get brand new watches. I just had one arrive today (too bad its one size too small, gonna have to do an atkins diet on my finger) its platinum with three diamonds(well CZ's) on it, but all indented, gold tint around the edges. Looks great but not pretentious or stupid.
You can always look at getting magnetic ear rings too, I never have bought any seriously, only once when I had to go to a bling party. But I've thought about messing around with something like that.
I also just bought a ring the other day I'm waiting on, its pretty pimp solid platinum but with a wood inlay over it. I'd post a link but I just signed up here so I cant post links yet

But something like that I figure looks good but not silly and would probably get a lot of conversations started over it.
but definitely ebay is a good place to check out for accessories