I've just discovered CouponMom.com. They linked me to coupons.com. The coupons I printed out today included ones for $5 and $3 off Huggies! (Edited to add: I had no problem using several of the coupons I printed at Target.)
Did you know you can combine store coupons and manufacturer's coupons on the same item at Target? I love it when I get a coupon mailer from them, because I almost always have manufacturer's coupons for the same items and it adds up to some really nice savings!