Today ONLY (4/3), you can order TEN 4x6 prints from Walgreens for FREE when you use promo code FREEPICS10 at checkout!
NOTE: Their site says Wednesday, April 3rd but the code DID just work for me!
*Coupon code FREEPICS10 valid for one use per Walgreens.com account thru April 3, 2014. Only one coupon code per order. Limited to 10 free single-image 4x6 prints per household. Code must be entered at time of checkout to apply discount. Photo cart must include 10 or more 4x6 single-image prints at time of checkout to qualify. Discount does not apply to collage prints, previous purchases, taxes or shipping charges. Order must be placed by logged-in customer by April 3, 2014 at 11:59 p.m. Central Time to qualify.