Boyfriend Blanket Pattern - maybe double the pattern to get the length for a full afghan instead of a lap blanket...
Crochet Rectangle Rug
Crochet Rectangle Rug - (idk what this one is made out of yet, but you could make a door mat using twine, or thin rope. A regular rug could be from strips of jean or other fabric, kitchen string, or yarn.
Plastic bag made from grocery bags!
Crochet Bobble Stitch Rug Lots Of Free Patterns You'll Love
Bobble Crochet Blanket,free pattern and video tutorial