This company also sells pre-punched and formed suede full slipper bottoms. This is making me look into sheepskin insoles and dreaming of making lots of cozy, expensive, beautiful pairs of slipper-boots.
To put on crochet slippers. These are knitted slippers but the concept is awesome and has just made my decision on Christmas projects!
Non slip slipper
To put on slippers-- Love this idea!
Crochet a Cute Sunflower - DIY Crafts - Guidecentral