I ran across these at Amazon. A company called Linkswalker has “bulk” packs of ball markers for nearly every team you can think of. They’re all magnetic, so you can insert them onto your favorite cap marker holder. I’m going to get a couple packs of my two alma maters.
Its a funny thing, but the older I get, the more important those schools become to me. I have more WVU stuff now than when I was in school.