Well, I've got about a hundred of these, so I'd better get to work! Jason gets home tomorrow, and it's about midnight so I'm just going to tape them to the wall above the head of his bed. I'm not sure how many there are exactly (I forgot the total) so I'm just going to start taping and when I run out of cards, stop.
Oddly enough, there were exactly enough! I didn't plan the layout, but it turned out exactly right.