2nd Baby essentials?

Chasity

Im due in January with a baby boy. I have a 2 year old little girl right now. My mom said that they might plan a little diaper shower for me, since this baby is a different sex. We already have a car seat, double stroller, bed, swing, bouncer, baby wearing carrier, & bath tub. What are some things that y'all found useful with your second baby? Thanks!