The Ghost of LEGO

Everyone has been there, the dark walk to the bathroom at night, running in from outside, or simply walking to the kitchen table, suddenly OUCH! Pain radiates through your foot and up your leg.  What could possibly have caused this pain, you ask?  Why of course, a LEGO brick lying on the floor, practically hidden.  Where could it have come from, you know you put them all away, everything was swept up and placed where it belongs.  It's the Ghost of LEGO, when you are not watching he comes along and deposits them just where he knows you will not look and waits for the fun to begin.  

The ghost is made of black bricks so he hides well in the dark.  He is on a relief of multi-colored bricks of various sizes and shapes, that he can deposit where an unsuspecting person is about to walk.