Backup locations
Documents
~/Documents
~/Projects
Keys
~/.gnupg
~/.ssh
Media
~/Music
~/Pictures
~/Videos
Network
/etc/hosts
/etc/NetworkManager/system-connections
When restoring ensure that they have permission 600.
sudo chmod 600 /etc/NetworkManager/system-connections/*
Further
Any bash alias'
~/.bash_aliases
Any apps that are installed such as firefox, hexchat
~/.mozilla
~/.var/app/io.github.HexChat
~/.var/app