pretty much any decent multi-purpose spray adhesive will work fine. the 3M 77 or HDX brand can be found at your local home depot.
spray one side only like contact cement, allow to dry until tacky, and then put them together if you want to be able to take it apart.
spray both sides and allow to get tacky before putting them together if you want it permanent.
obviously you need to mask areas you don't want to be sticky.
you can also spray some of the adhesive onto a piece of cardboard and use a brush or your finger to put some in spots you want it to stick better.