We salvaged four hardboard plates covered with a white finish from an old closet.
Then we got cover-foil to protect books for a total of € 10,-
We had enough screws lying around so those where free also.
In total we used 21 screws and one washer
The tools we used where a measuring tape, a knife, a wooden spatula and a drill with screwbit.
Step 1: Basics
Be sure to clean the surface you use for the plastic, because every hair shows up on the finished board.