Real baby freebies?

Has anyone here found any real and legit freebie/sample websites for baby related items? I have already signed up for the Enfamil and Similac lists and have also signed up for the pampers and Huggies rewards. But babies are expensive and anywhere I could possibly score a sample or two would be greatly appreciated.

Also wondering about good coupon sites and tips. I want to start trying to coupon lol.