Anything that has anything to do with alcohol.
Depending on the national there may be events that are looked at as "unladylike" but those are usually a case by case basis and depend on people's opinions.
Our main problem was with the college - they severly limit the number of fundraisers and you can't repeat the same kind. For example, if KKG has a raffle, Theta can't have one the same semester. It really makes things difficult.
