Head over to Coupons.com and print the coupon for Buy One Sour Punch Straw Get One Free!  Once you have that coupon, add the 35% off Cartwheel offer to your account and head to Target to save!

Purchase two packages of Sour Punch Straws at $0.79
Use the Buy One Get One FREE Printable coupon 
Use the $35% off Cartwheel Offer
Total cost two for $0.52

(Thanks FreebieShark)