COP2: making it interactive?

I don't exactly want to turn this into an activity book because it is aimed at adults but I thought about putting little stickers in there, maybe at the back. Maybe just one. All of this would be in a lighthearted manner, quite obviously ironic and not supposed to patronising. Maybe they could pick and choose a sticker to correspond with how they feel at the end of it.

It could go further with say, a customisable plain character or spaces for your name and whilst I suppose this could all be done in a funny way it could easily feel superior. I think I'm maybe getting distracted from the actual content!