for formula and a diaper bag and hospital bag similac gives you a journal sample cans and a travel bag to take to the hospital plus a diaper bag at the hospital just go online and sign up american baby will send you free 12 months of baby mags.
WIC if your income is low enough. Get on the mailing lists for all the formula companies (even if you don't plan to use formula, you can give it to someone else, but they send you other stuff, too). Put in some different Google searches and see what pops up.
A lot of places (like Babies R Us) will give you free stuff when you register through them.