alt Hacker NewsWe just aged out of this as our youngest child is now 11, but I can affirm that magnatiles are fantastic and fun - and that is coming from someone who lionizes legos and considers them the ne plus ultra of toys for children.
That being said ...
We got a lot of mileage - many good years of use from male and female children - out of "Snap Circuits":
A very, very cool building ecosystem with easy to build and understand recipes - we built a working FM radio, for instance. Not at all fussy or fragile.
My children are not particularly "STEMy" but they all enjoyed breaking out the "circuit kit".
I can confirm as someone that had these or a very similar kit as a kid that they were enjoyable and the knowledge proved useful when I started working with real circuits in high school and college.