Are my Kids Eating the Pencil, Markers, Crayons, Glue Sticks and Other School Supplies?

And if not, where do they go exactly?

When we moved to our new house one of my first projects I completed was this area for the kids to keep their school stuff.  I bought the fabric pockets at the Container Store for this project.  The hook and basket combo I bought there several years ago.  I just used name tags to label the pockets because that way I can change them next year.

For some bizarre reason I thought this would help them locate their homework, do their homework and then take their homework to school and hand it in to the teacher.

All it has really done is allow the children to easily locate the pencils, markers, crayons, erasers, scissors and then... I don't know what they do with them.

When asked the kids are all completely flabbergasted that the stuff has all disappeared.  None of them ever use the school supplies in the cups and when they do, they always, ALWAYS put them back. 

Not even a week ago these handy dandy flea market find cups were filled with all kinds of school supplies.  As you can see, they are now mostly empty.  Logically there should be a large pile of pencils, markers, glue sticks, crayons etc somewhere in my house but there isn't.

My first theory: A school supply sucking black hole located somewhere in the kitchen.  Which leads me to question why the black hole is always leaving dirty dishes on the table.  This theory isn't the best one because it's very picky about what it makes disappear.  Mechanical pencils and glue sticks are it's favorite.  It won't eat broken pencils and backpacks left under the kitchen table don't get devoured either.

At around the same time the cups all turned up empty, all the chap stick disappeared as well.  With that clue another theory might be that one of the kids has opened a mobile commissary for their school friends out of their backpack since none of them own trench coats.  I know they don't have trench coats because I haven't picked them up off the floor in the kitchen.  Yet another thing the black hole won't suck up, coats.  This theory breaks down in that none of them is sporting extra cash to spend. 

OR and I'm leaning toward this explanation, the kids are eating the school supplies and washing them down with chap stick to make the whole kit and caboodle pass more easily.