We did this in my church and I always liked this: Take a big ball of yarn and put everyone in a circle. Have each person throw the ball, while holding the end of the string to a person in the circle and say something nice about them (or their org) and have everyone keep doing that until the ball is gone. You're left with a tangled web of string between everyone. Then, have everyone work together to untangle the string. It's a powerful symbol that all Greeks are connected and can work together on big projects
I wish we had had a retreat when I was neutral - I think our group needed it cuz there were cliques even in our Rho Gamma group! We just had a couple days of workshops to learn about the other groups and Panhel FR laws. That sounds so fun, ADPi!