Sign up for Discounts!
You will need to purchase many things during the school year. You can sign up for weekly emails and receive coupons, some up to 50% off. I am adding links to the local stores that offer discounts. Please note that discounts on fabric are in single cuts, therefore, you may need more than one coupon for different colors of fabric.
I would suggest checking out Walmart in Round Rock or Austin. They usually have the cheapest material, however, their selection is not as large.
http://www.hobbylobby.com/email_subscriptions/email_subscriptions.cfm
http://www.joann.com/ - On homepage at bottom