I think the gender issue is interesting too. We don't push stereotypes, but we certainly notice that our boys are most definitely typical boys. Their favorite things to play with are cars & trucks and building blocks. They will build large towers and then launch something at them to knock them over and send the blocks all over the floor. They have a baby doll, but it is mostly used as a missile to knock over blocks. We have got them a play kitchen for indoors and a play grill for outdoors for Christmas, so we'll see how those go.
We do keep our baby "stuff" gender neutral, as we intend to use the same "stuff" for how ever many children we end up with, and since we don't find out gender before birth its easy to not go for anything that is too one way or the other. Most of our baby clothes up to 3 months is neutral too, even after 2 boys. Right now they get dressed mostly in t-shirts and around the house we just have them in their cute cloth diapers (DS1 is transitioning to underpants some of the time, so he wears shorts with them) and then when we go out we put shorts on them. Living in a climate where it is warm/hot all year really helps to keep their clothing simple. As babies they mostly just wore a diaper and white onesie unless we were going out somewhere, and I'll do the same for any girl.
I've also noticed that our boys have a definite preference for men over women. When we are both home DH wins over me, unless they are ill. When DH's parents visit they play with Papaw and ignore Gigi, and the same goes for my BIL and his wife. I have no problem with them being very male oriented in both play and relationships. They have fairly similar personalities and to me the important thing is they like playing with each other, even at their very young ages. It will be interesting though to see how this new baby effects their dynamic.