GLOs that don't let new members wear letters?

[AOIIBrandi]

AOII lets NMs wear just about anything, however, the only AOTT jewelry they are allowed to wear are lavaliers and their pledge pins.

On my campus the big thing was a sister's disc (the round disc in silver or gold, usually with crest or letters, you wear on a chain) more people wore them than lavaliers, unless it was your BF's, so our Bigs gave us those at initiation.