Hmm. I never did think of rings . . . there are some nice ones in that price range.
Funny, no one is mentioning locks or keys?
I think I'd like something that's iconic to Tiffany, without hitting you over the head with Tiffany . . . although, I did like the T&Co ring. But they also have SO many beautiful, artsy pieces too. I just love their designs. I'm wondering though, in my price range are the mini's too mini for necklace pendants?
I guess the dragonflies, butterflies and doves aren't as popular as the bean?
I like locks and keys but I don't think they are really in your price range unless you get the tiny one on a really short chain maybe.
I really like the Elsa Peretti teardrop collection and the small atlas pendant, maybe look at those.
If you are buying in store when you go, they will have a lot of different things that you may not have seen online. Maybe just play it by ear and see what speaks to you at the store!