Growing up children usually love playing with toys whether it's dolls, trucks, Legos, princess stuff, etc. Well sometimes boys like dolls and girls like trucks but sadly we are putting kids into a specific gender category when it comes to toys, I think that all boys and girls are different and they should like the stuff that they like not something that is only assigned to their gender.
Say you are at a toy store, and you see a mother and a son shopping for a toy because he got good grades on his report card, the boy wants a princess doll but the mom is like "no that's for girls why don't you get the truck" but the boy is insistent on getting the princess doll. This is similar to an episode of "What Would You Do" these people may be actors but this problem is all too real.
When I was growing up I was a girly girl I played with Barbies, Polly Pockets, American Girl Dolls etc, but I also liked watching the Power Rangers with my brother and the "Star Wars" movies and "Jurassic Park" stuff that is stereotyped into boys liking. As I got older I started to get more into the Marvel characters (favorite is "Deadpool!") and I know that anyone can be fans of Marvel characters and anyone can be fans of Barbies regardless of gender.
Another thing that I have noticed was that some of those toys are separated by gender like Mega Blocks (remember those?) well I remember having the pastel colored ones rather than the regular colored ones I guess my mom wanted me to have toys that a girl would have well maybe then I did I was a huge fan of pink back than, but now I don't care what color they are when I have kids they can pick whatever color they want.
There is also little sets doctors kits for boys and nurses kit for girls, girls' kit said beauty shop and the boys' kit said medical center its basically telling them that they can only be that career but there are lots of female doctors and male nurses, same with men who do hair, I have had my hair done by a man since I was four so there is no gender for that career. I say let the girl get that science kit, let that boy have a sewing machine let them do what they want.
Whether you have kids, nieces or nephews, brothers or sisters, cousins, or if you plan to have kids of your own one day, don't get them something assigned to a specific gender find out what they like, what are their interests get them something they would like never tell a child that they cant be themselves.