These are some great places in my opinion, and what's common between them is little touches of grace, natural materials, and well-kept but showing-some-wear items. I love those bright yellow dining chairs and the Thonet dining chairs. Images from
A new bed for David's room. He asked for a shelf above the bed as well to put books and a clamp reading light above the bed. Maybe extend the end of the bed for extra storage? Might make the bed a bit taller as well to make room for his Lego bins.