National Geographic Explorers - meet scientists from around the globe who love to connect with students! 
https://www.nationalgeographic.org/education/student-experiences/explorer-classroom/

Neal.com - some weird and strange but interesting things to explore from Neal Agarwal
https://neal.fun/ (check out the Deep Sea!)

Harry Potter At Home 
https://www.wizardingworld.com/collections/harry-potter-at-home

Harry Potter: A History of Magic Explore the wonders of the British Library exhibition
https://artsandculture.google.com/project/harry-potter-a-history-of-magic

Wide Open School - resources for fun home schooling 
https://wideopenschool.org/

Girls Who Code 
https://girlswhocode.com/ (boys and girls can participate)

Bar of Soap Rube Goldberg Challenge
https://www.rubegoldberg.com/

Poem-A-Day
https://poets.org/

Wenatchee River Institute shares some online resources 
https://wenatcheeriverinstitute.org/education-programs/online-educational-resources.html/title/middle-high-school-focused

NCRL public library
online services http://www.ncrl.org/ UPDATE: Families can still access the public library. If you don't already have a library card, you can now register for an eCard online. http://www.ncrl.org/blog/introducing-our-new-ecards 

StorylineOnline
(fun to share with younger siblings) https://www.storylineonline.net/