Do your LOs prefer the 'gender specific' toys?
I have both a boy and a girl so we have a bunch of toys that are meant for 'boys' and 'girls' and also gender neutral of course. Still, while my 3.5 year old daughter does play with her brother's cars and trucks and whatnot, she still mostly prefers her dolls, ponies, babies, and all that sort of stuff. Same with my son. He will play with her ponies and dolls and babies, but he still prefers his trains, cars, and all that.