The studio i attend has spring and fall festivals where each friday night dance has a theme. We are currently in the Spring one and we have had the following for theme dances:
Hat day, everything from regualar to funky ones.
disco day, lots of hustles played that night
Latin party, missed that one but heard it was great
Jack and Jill competition night
tonight is karaoke night
pot luck night.
masqurade night.
for the other party on wednesday, we had to wear our teachers color, (each teacher had a diffrent color assigned to them at the begining of the festival) you then get to see how many students belong to what teacher.
If you need other ideas, e-mail me, i have a ton of them as i help plan these myself with my current studio.