Acrylic Net Key Frame

Alright so this' the deal: I live in a student dorm at uni. and we're not allowed to nail stuff onto the walls leaving drill marks and nail marks and what not.
But my problem is that my room's almost ALWAYS a mess and I always loose my keys, either on the table with my computer and study books or on the drawer.

Step 1 The idea

So the ceiling is framed with an extra piece of carpenting where it's connecting with the wall. This means that there's a piece of wood is hiding the corners at the same time giving us a way to put up pictures, mirrors and paintings without the use of nails.

So with this in mind and a piece of acrylic plastic in my hand for another project ('ible coming up soon) and with a fascination for geometrical figures I decide to make this my key box.