Despite what the TF2 Wiki says and what a Google search would lead you to believe, there is in fact a way to craft the awesome Towering pillar of hats.
Craft two of the Spy’s Camera Beards which will create a Towering pillar of hats!
I only found it out by accident and when I mentioned it one of the other players already knew about it. It would seem that players are attempting to keep the secrect under wraps. I can hardly blame them considering how much I envied players with the Tower of hats.
Of course to do this you’ll need two Camera Beards which aren’t exactly common, or maybe they are after all I had three of them.