Here’s an interesting idea I heard about recently…
Plan out an online treasure hunt using several images.
Then contact a few of your partners and ask each one to pin an image on their Pinterest board. Each image gives a clue to the next image in the treasure hunt.
Publish a blog post about the promotion along with a link to the first image. Fans then go from image to image by following the clues. The last image forwards them to a hidden page where they enter their info to take part in a raffle, or they get a free download, coupon, or whatever you choose.
One note: Make the treasure hunt fairly easy and lots of fun.
Let me know if you try this out!