Bioshock Infinite: How to Obtain All Gear
Tested and working as of 4/11/2013
This can only be performed during a very specific spot during the game, after dealing with Slate and obtaining Shock Jockey. The process is somewhat time consuming, but will allow you to collect all the gear relatively early in the game, which can be rather helpful on Hard/1999.
You can also also load 'Return to Hall of Heroes Plaza' and play from that point forward in order to utilize this.
1.) After dealing with Slate and acquiring Shock Jockey, you will need to return to the boardwalk area (Where the carousel is located).
2.) Approach the carousel, to the right of it you will notice the shop 'Toy Soldiers' with it's door closed. You may have visited this store when you first arrived at the boardwalk if you explored, it contained the Vox Heater Replica.
3.) The door can be forced opening by simply pressing the button prompt in-front of it. Inside you will see a pylon and locked doors, use the Shock Jockey on the pylon to open the doors, there will be a piece of gear sitting in this room.
4.) After grabbing the gear, you must return to the Hall of Heroes (The area you just came from), and go inside so that you get the loading screen.
5.) Return to the 'Toy Soldiers' store and repeat the above steps to acquire more gear; this process can be repeated indefinitely.