Baby Basics

I have some friends that are expecting their first child in February.  We were talking & the soon-to-be-mom was saying that they had recently completed their baby registry & how she felt a little overwhelmed at all the stuff there is to buy.  I told her that you don't really need all of the stuff that they try to sell you in those stores.  She said that she had been told that before but no one had ever actually said what you do need.  They are the first in both of their families to have any children & also one of the first of their friends to start having kids, so they haven't been around babies a ton.  I thought it would be nice to make a list of tips, tricks & things you actually do need for them.  I'd love to hear ideas from any one who is willing to share!  :)