Baby must haves!!

We are only having one shower as my husband moms and dads side decided they wanted to do meet the baby parties instead. What are baby must haves that we NEED before he arrives. We are going to redo our registries now so that we are getting what we need from the shower than can add the less important stuff after for the meet the baby parties. I'm so stressed that we are not going to get everything we need and will have to worry about spending a bunch of money while we are worrying about having money saved when I am out of work. 😔