Want a tablet Mac? Got a MacBook and a Wacom tablet (They're under $100 at a lot of places)? Let's do this.
WHAT YOU WILL NEED:
Wacom tablet that's smaller than your screen (I used an 8-year-old Graphire 2 USB)
A small Philips screw driver #00
A dremel tool, or similar
Some form of MacBook case. I used one of these
Some form of screen protector - you don't want to scratch it with your stylus. I used this one
UPDATE: I chopped the cable and added this tiny hub to the lid. Now there are no loose cables, I only need a USB (A to mini B) cables to connect the tablet, and instead of losing a port, I gain three.
Step 1: Strip the screen
NOTE: There's a magnet on the left side of the screen if the laptop is open and facing you (indicated with yellow arrow in the render). Don't lose this magnet! It's how the MacBook knows the lid is closed and it should go to sleep.