What are some of the best marketing strategies to attract customers?

You can adopt any strategy---In Australia in the Cricket world cup the spectators are given a shared prize (sizable amount) those who take a catch by wearing a T shirt of a a Beer company which they get free while buying the product for50/30 dollars at a stretch.   Everything depends upon the creativity you think on a product which are going to market and the strategies may differ from product to product and place to place even generation to generation.