It was discovered recently that in the PC version of Fallout 4 you can access a special area that contains every single weapon, armor set, holotape, bobblehead, and more. Accessing the location only requires you to type in the PC command “coc qasmoke” without the quotes.
This was the same code used to gain access to the developer room in Skyrim and Oblivion. In Fallout 3 the command was “coc testqaitems.”
YouTube user Tyrannicon has a handy video that shows you just how to get into the location, which you can view below.