Best things to register for? Baby boy has his "necessities" of crib, car seat, clothes, diapers and…

Best things to register for? Baby boy has his "necessities" of crib, car seat, clothes, diapers and such. Now we get to register for the extra goodies like swings and pack and plays. I only have 45 items on my registry and my mother in law requested I add a little more if possible so that people have more options. What are your favorite, can't live without items?