use this time to sort your files, delete old stuff and make mental notes of what to backup
i usually save every (ok most) webpage/s i visit into folders sorted by categories. I have over 4000 html pages since i started in 2015. I use this as a buffer when i'm not connected. Its a good practise to adopt and there are many extensions to help you with that if you dont want to write a python script for it.
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My system is offline most times so i will suggest