What's better than a box?

What is it about all the other things of the world, that kids love to play with them more than toys?

My kids love boxes, to say the least.  Here's a few great shots of what they've done with boxes.
More often than not, they like to be robots in boxes.

Monkey cut the arm holes out of this one all by himself.  I thought he did a good job considering they are in the same spot on both sides.  And he used a kids scissors to cut through this thick cardboard.