Hard drives have one or more spinning reflective disks in them and make great mirrors.
Step 1: Tools and Parts
The only tool is a security hex 8 size screw driver
-Stick (to spread glue)
Step 2: Open the Hard Drive
Use your bit to unscrew all the screws, including the hidden ones and pop off your HDD's cover.
Sorry I took the drive apart before I started this so I didn't get pictures.
Step 3: Get the Disks Out
There are two arms for each disk (one top, one bottom.) These are brittle you can just break them off. On the opposite side of the arms is a coil and heavy duty magnet, you don't want to use it NO GLUE will hold it yet, maybe try JB weld. Bust off the other this stuff to so you can free the disks. Now you must use your hex bit to remove the rest of the screws that hold the disks in. Now take out the disks.
Step 4: Make M' a Mirror
Glue the two disks together and add a cutout magnet to the back.