Writing/drawing Pad From a Chassis Case

Hello :)

This is an idea of a cheap-n-fast pad for writing or drawing.
You just take a computer chassis case (1 side), 3 binders and a pen cap - and here you go.
It appears to be wide, so it is very convenient to write.
Intended to be used indoors because of its weight and size.
Have fun!

Note: it's about severe dormitory students design ;)