You will be happy to know that I finally have a new pair of shoes. They were made in anticipation of my upcoming trip to Mexico. I thought I would share my process since they were pretty easy.
I started by cutting the foam soles off of a thrifted pair of shoes. I looked into buying foam but it wasn't the right density and it was kind of expensive. In the end I didn't feel bad about taking apart a very ugly pair of shoes in order to give them a new and improved life.
I sanded them down and added a nice smooth new piece of foam as a comfort layer.
I cut thin leather strips and stitched them together to make the straps and then cut holes through the foam with a knife and squished the leather through. I tied the long ends into a knot and the ends under the toe are glued down with the ends squished and glued into new slots.
Oh yeah, and then I had to make toe-socks so that I could wear them right away.