tons of free patterns for how to make your own crochet slippers - love all of these! --Sugar Bee Crafts ༺✿Teresa Restegui http://www.pinterest.com/teretegui/✿༻
Mary Jane crochet SHOES Turquoise and Purple by lepiedleger
Crochet Craft: HOW TO MAKE ROPE FOR CORD-SOLES ✿⊱╮Teresa Restegui http://www.pinterest.com/teretegui/✿⊱╮
I couldn't find the link to where this came from as this link just takes you to a pic. But, I'm posting it anyway because this idea is a good one. Obviously, the site is not written in English, but the pics look self-explanatory.
Yay, I found the source for these lovely boots!
Use old flip-flops (thongs) to make new slippers #repurpose #refashion #trashion
Ravelry: Tailored CORD-SOLES - NEW Method for how to Turn home slippers into street shoes pattern by Ingunn Santini
3DC in each hole, then single crochet to get the shape you want. Felt for the sole should do.