Need Creative Help for Harry Potter/Jurassic World/Universal Orlando Surprise

[Raidra]

Santa is giving the kids Universal Orlando annual passes. I need a fun way of presenting them to the kids. They will not be the actual passes, as we'll get those when we go for the first time.. I may get them UO gift cards or not. What I do have are four square gift boxes. I'm going to wrap two like they came via Owl Post, and the other two I will make look Jurassic Park-y (HP and JP are the kids' biggest interests). So at the very least, I need some clever note/poem/riddle to put inside the box. I was thinking it might be kind of fun to do a scavenger hunt, but I so do not have the mental energy to come up with it on my own (working nights, pukey kid, family coming from out of town tomorrow).

Any ideas?

Thanks!

[LBW]

Maybe write out one note on poster board and then cut it into a bunch pieces and the put some in each box? The kids would have to put the note back together to get the full message.