I've written about using coupons to test the waters for a new perfume idea. This article suggests a way to use coupons to get more visitor involvement with your various online presences. The strategy goes like this --
You establish a prize, perhaps a discount on one of your fragrances, perhaps a free bottle of fragrance. Next you distribute coupons, each bearing a code number, around your website and social media presences. Then you announce the treasure hunt, on Facebook, Twitter, your website, etc.
The deal is simply this. The person -- it could be just the first person, it could be the first ten people, it could be whatever you want it to be -- who collects all of the coupon numbers and submits them to you gets the prize. (In your announcement you'll state how many coupons you've hidden and where to look for them -- website, Facebook, Twitter, etc.
To make this work you'll have to make it fun and not too serious. You're not looking for the obsessed hunters of free offers. You're looking for people who will engage with you. The treasure hunt is a way to get them interested in YOU and the fragrances you sell.
Give it a try and let me know how it works for you!