[refurb]

If you haven't read the Contract of Carriage before, I'd suggest you do. It's actually pretty fascinating and could come in handy when you want to set an airline employee straight.

I had no idea the lay out what is acceptable luggage including trophy antlers:

Antlers - Subject to the conditions and charges specified below, one set of antlers retained as hunting trophies per ticketed Passenger will be accepted as Checked Baggage, if aircraft size and load conditions permit.

If you go on hajj, you can bring back 10 L (!) of ZAMZAM water free of charge:

ZAM ZAM Water - Subject to the conditions below, one container or jerkin containing up to 10 liters (2.64 gallons) of ZAMZAM water will be accepted as checked baggage by UA at no extra charge in addition to the Baggage Allowance.

[1]https://www.united.com/ual/en/us/fly/contract-of-carriage.ht...