Alright, here's how to make one.
Take a flat surface (We used a posterboard)
Right YES in the right corner, OUIJA in the middle, and NO in the left corner.
Right the alphabet in the middle so it takes up two rows.
Below the alphabet, write numbers 0-9
Below that, write GOODBYE,
Get a glass cup and put it in the middle.
You should have 2 people to play, but I once tried it alone and I felt it move all on it's own.