A Sac Spider Guards her Eggs - Bob Armstrong's Nature Alaska

https://vimeo.com/346514773

A Sac Spider Guards her Eggs is a video of a spider with her eggs in a rolled up alder leaf in Juneau, Alaska.
Joey Slowik identified it as belonging to the genus Clubiona one of the sac spiders.

I was able to keep them in a closed container until the young spiders left the nest.

Of interest is I looked carefully for the mom, with a binocular microscope, and there was no trace of her.
I suspect her kids fed on her.
For information about this behavior, which appears somewhat common among spiders, look at /sites/default/files/Wise20DH20200620Annu20Rev20Entomol_Cannibalism.pdf
In this book they state: In some spiders juveniles eat their mother before dispersing from the communal nest [termed gerontophagy, or more commonly matriphagy].