Hello marvelous minds of Libraryland!

As many of us youth librarians are scheming and planning for the coming summer reading (June isn't that far away, right?),  I am considering revamping our paper logs and reward coupons from community partners into something that is more like a passport style booklet. In the past we have had a brochure style handout but a passport that can be used to track reading AND redeem prizes could be extremely helpful for both sponsors and my staff.

 Does anyone do anything similar? Or a different physical log that works well at your library? 

I would love to know your ideas and if possible see what your logs look like.

Thanks for your time!