It's a few years old but check out the art quilts in this day of the dead challenge. You can find it here

Allyson Hill has a great blog featuring a couple of tutorials. This one shows how to use printable fabric from Joann Fabrics to create fabric labels but it could just as easily be used to print out words for fabric or altered books . . . She has another tutorial on wipe clean coasters using fabric and vinyl that I think would be great for book covers . . .