#2 A WWE Rule Book
This is not something that Vince has, but rather, something he had.
The story goes that at one point in his career, Vince wanted to do something in a storyline, that many felt wouldn't make sense. When one lowly employee told him that the finish of a match he had would break the matches rules, Vince was incensed and demanded that the employee write an actual book - or rather, a list of rules for WWE matches.
After a while, McMahon received his rule book, and after moments of flicking through it, threw it in the trash, a symbolic gesture that he decides what goes in the WWE.
Interestingly, a few years ago, the WWE would release a rulebook (as well as tips how to break those rules), which the WWE Universe can buy, and has contributions throughout the book by the chairman of the board himself.