are you asking us for themes? If so,
-Carnival
-Casino
-Underwater
-Hawaiian
-80's
-70's
-60's
-50's
-Jungle/Safari/Animals
-Depending on where you live, something locally themed. (Aspen started as a silver town, we had a dance that was all about mining. it was fucking retarded.) But you might have a better location to employ this idea.
-Celebrity/Hollywood
-And..........GYPSIES!!!
thats all i got for now.