Boxes...Probably getting late at this point but SS boys could probably get you one in time. Marlin Watkins maybe also. That's for short boxes. Long boxes, probably Ernie Fetters could get you a good one in time.
Mouth call...Woodhaven, Hooks, Pecker Wrecker are good. There are tons of good ones. I'd check Midwest Turkey Supply. They'll have a bunch and they can give you some input on what you might want. Calling All Turkeys has a good kit to determine what cut is best for you.
Pot calls...BlackStone is good for glass. Lonnie Sneed is hard to beat. His green glass is about as good as you'll get in respect to realistic sound. Aluminum, Jimmy Schaffer makes a great blasted aluminum. Slate, Scott Hock or Jimmy Schaffer would be a good choice. Copper, Scott Veiting.
There are a lot of guys that make great calls but at this late date, the above might be worth a call...