Put a smile on a U.S. soldier’s face by donating an item for a care package at any Old Navy any day this holiday weekend, through July Fourth. And for your good deed, Old Navy is giving you 10% off your purchase — over and above the holiday weekend sale prices. You can donate anything from candy to gift cards for downloading music or phoning home, socks, even Old Navy t-shirts. Through July Fourth, Old Navy is having a $5 sale, with lots of items for men, women and children. In 2010, the Operation Care and Comfort program raised more than $1 million in donations for US and Canadian soldiers serving overseas.