I know some colleges get conference championship rings, world series appearance rings (just for getting there), and I would suppose NCAA world series winner.
Son has 4 rings. 1 for high school state champion, 1 for D2 college world series champion and 2 for spring break tournament (Hillsborough County FL Saladino). The high school state champion ring parents chipped in for, the college championship ring was paid through Alumni and local dignitary donations, and the 2 Saladino rings were donated by the ring manufacturer.
If he played at one of the D1 schools I mentioned first and awarded the same way he would have added this many rings just for college: 3 conference championships and 1 other world series appearance (0-2 and Bar-b-que).
The two he really cherishes are the HS state championship ring and college WS ring. He wears the respective ring when he goes back to the respective schools for alumni appearances.
He is throwing out the first pitch at his HS opening game next week, he might wear all 4 rings just for the wow factor. Gives those kids there something to shoot for!
Side note on the first pitch, HS coach asked him today when he was working out with another alumni minor leaguer at the HS field. He said sure he would, but jokingly told coach he wanted to be introduced as a major pick(up) for the Rays, not the non drafted free agent that he was.