The contents of the gift box hiss whenever anyone but Diego gets too close.
Upon opening, Diego will find what is obviously one of Essie's creations, though Diego should recognize that origami works typically mean that Johanna has been involved somehow. In addition to the hissing, the snake has been charmed to furl and unfurl on its own.
Essie isn't good with putting sentiment into words so the tiny note card (with poorly drawn snakes all over it) inside simply reads: