I am quite liberal about using props - but there is one condition: props should ephasize/flatter the dance, not draw attention away from it. I would like to dance with my parents dog, but it is so cute little thing that everyone would stare at it and not me

. And for me it is also about how you name the dance. If you call your dance "fantasy bellydance" you are free to use any prop you will

(as long as you do it with taste, of course). So IMHO using fans is ok, if you can find a way to use them so that it suits to belly dance technique.