Unique gender neutral ideas!

Hi! I'm having my second in January and redoing my daughter's nursery for the new baby. The walls are teal/turquoise and furniture is white and grey. Previous theme was Dr. Seuss so bright colors for decor. I'm not going to paint the walls again and furniture stays so any ideas for a gender neutral theme that would have more light, natural colors like beige, gold, navy, tan, etc that work around those colors for wall and furniture? All decor up for changes! Figured we have some creative people in this group so excited for any and all ideas! Thank you!!