The "Ahh Yeah" Piece of Baby Gear

What's the piece of baby related gear that, after you got it, caused you to just take a deep breath and feel like "I've got this,"? The thing that made you feel so happy you had it that it didn't matter what else you still needed to buy, things just felt a little more real and complete with that one piece?

For me it's a rocking chair. I was a "rocking chair baby", I grew up rocking my younger siblings, and now as a nanny nothing makes me happier than when a family has a rocker or glider so I can sing and rock the little ones to sleep. I may only be 11wks, but having just bought a glider of my own makes me feel so prepared and ready to be a mommy 😌