Another blog post from A Mighty Girl here, with lots of different suggestions for things to do at home.
Some that may be more relevant for here are:
Read Mighty Girl Books
There is another post which has all the ones recommended on A Mighty Girl that cover STEM.
Discover Inspiring Women of History
There are plenty of blog posts on A Mighty Girl, but also here in our community forum, particularly in the Women in STEM category.
Become A Local Naturalist
Dig Into Geology
Get Playful With Math
Resources on our forum that may help include the NCETM.
Try Some Basic Woodworking