For Jack, I’m picturing him writing on post-it notes and sticking them on the fridge, on their bedroom door, etc., for Robby to find when he wakes up. He probably has a stack of post-its on his night stand to write things down before he heads off for his shift.

For Robby though, he’s grabbing whatever pieces of paper he could find to scribble on, not caring what shapes or form they are in, as long as he can get the messages across. He would be putting pieces of tape on them so that he can slap these notes on random surfaces in their home for Jack to come across, a gift of pleasant surprises.