Old Navy takes 40% off sitewide during its Super Cyber-Delic Sale. (Discount applies in cart.) Shipping adds $7, but orders of $25 or more receive free shipping via coupon code "FREESHIP". No exclusions apply to this discount, which is unusual at Old Navy and makes it one the strongest sales we've ever seen from the store. (Shipping is also normally free on orders over $50.) Sale ends March 17.
If you know where to look, you can score freebies at the dollar store regularly.