15. Drink Like a Viking
For those who want to party like it’s 793 AD, cow horns are actually permitted in carry-on bags. These ancient drinking vessels are considered harmless, provided you aren’t using them as a weapon.
Just be mindful of your fellow passengers when you’re maneuvering your horns in the cabin. While they aren’t prohibited, a sharp cow horn to the shoulder is never a great way to start a flight.
