At heart, pizzas are pretty basic creations made from dough, sauce and toppings. But the humble pie has also been a springboard for oddball innovations and publicity stunts involving strange new designs, delivery methods and boxes.

Pizza Hut is proud of its heat-containing pizza delivery bags designed to keep your pie warm from the restaurant to your home. In a wonderfully weird publicity stunt from late 2017, the chain created a wearable jacket made from the same material. 

The Pizza Hut Parka uses three different kinds of insulating material, has a built-in napkin and specialized pockets for holding Parmesan cheese and pepper-flake packets.