Door Signs and Superman

One thing I love about Calvin is that he's always drawing pictures, making maps, hanging door signs, and otherwise decorating the house with his writing and artwork. Here is a sign he put on his bedroom door.

I do not understand video games, so this one is unclear to me. An "x" through Luigi, a Raving Rabbid below. He said something about his room being Luigi's mansion. It's cute though, and he is very proud of it.

This one though? This is genius:

It's a keypad. You have to "type in the code" by writing the numbers in the rectangle with the crayon that he has conveniently taped beside the code box.

His bedroom door:

 

Genius.

And more baby cuteness:

Nick loves to stretch. He regularly looks like he's doing the Superman: