Using whatever you have. Cardboard, fabric, foam etc. Rustle up a pair of the quickest and dodgiest footwear you can ... they do need to fit someone in your house.
As you are creating them consider where the time goes.
Transport, Inventory, Motion, Waiting, Over processing, Over production and defcets.
Take a couple of photos or videos while you are doing it and of the finished masterpiece.
Email pics/vids or links to Shane.
Took about an hour all together. Most time was spent trying to find some things that would work in a mostly empty recycling bin and sparse tool draw, and then how I was going to make it into a shoe! That and cutting the bottle perfectly in half with an old craft knife.
Here is my Shoe craft submission. M Brand. Skate loafers.