you could have a cake that fits the theme. and have the whole venue decorated with curtains and fabrics and have an overlapping design with it on the ceiling.
have your invites be a genie lamp(a real one or just one on paper)and you can get some henna artists and charge people like 3 or 5 bucks for each one. and have some exotic dancers and acrobats.
flame throwers and have some guys carry you out on a palanquin have LOTS of jewel tones(golds,deep reds,blues, purples,oranges,greens)
look up types of arabian/indian foods.(they are delicious)and of course...A GREAT DJ! have fun at your party!