Picture of Make these easy cardboard jean sandals w/ankle straps
I can't take credit for the basic sandals design. However, the ankle straps were my idea. They were pretty easy to make. I just took what had been the waistband and removed the belt loops , then I cut the band in half.  With a little imagination and steady hands I sewed the straps on. Oh, I did add a bit of extra fabric to the front and back of the sandals. Sorry the look so raw, I kind of wanted them to look that way.  They are a bit big on my feet, hence the straps. Thanks for the inspiration Giannyl