Barnes & Noble Educator Discount Card can be found at: http://images.barnesandnoble.com/pImages/resources/pdf/educator-application-form.pdf
Books-A-Million: To receive the educator discount card and 20% off your qualified purchases you need to go to the store to obtain their application. Proof of homeschool may be requested. I went in with my letter from the State confirming I homeschool but no proof was requested.
JoAnn Fabrics: To apply for their 15% of every purchase Educator Discount Card apply here: http://www.joann.com/teacherrewardsform/?icn=teacherrewards&ici=TeacherRewardsEnroll. You will receive a 20% discount coupon with your card in about 2-3 weeks. The website does say to activate your card you must show proof of homeschooling. When I get my card I will post what was accepted to prove I am a homeschooler. I plan on again bringing in my letter received from the State confirming I am a registered homeschooler.