DD will be 18 months when DS is born in May. I'm NOT gonna use DD's pink and black diaper bag for DS so I'm looking for a unisex one. No blues or greens, but something I can carry more for both kids. People are telling me DD wont need one so I was also thinking if I found like an all black one for DS but what will I carry DD's stuff in (cups, snacks, etc)?! Any cute cheap ideas?!