There is more the college jewelry than just class rings. You can purchase several other types of jewelry to commemorate your time in college.
Consider a watch, a pendant or a charm with your college logo on it, or consider purchasing customized items to your liking. For example, if you played soccer in college, you can order your pendant with a soccer ball and your college logo on it. Most college jewelry can be customized if you wish.
Prices vary so you will want to shop around to compare to make sure you are getting a nice piece of jewelry in return!