In the very old days, the Ubuntu's file manager's bookmarks were stored directly as invisible file in the home folder ($HOME/.gtk-bookmarks). Since 14.04, they have been hiding two levels deep in $HOME/.config/gtk-3.0/bookmarks.
And if you wonder where the Nautilus scripts are, they are nowadays at $HOME/.local/share/nautilus/scripts/.
At the University of Helsinki, one can apply for group directories, which is simply disk space on a NAS. These are easily mounted when you use a university-managed computer via the university menu, but what about if you use your own machine? At least for Ubuntu Linux, the way to mount these directories has changed multiple times during the years and it again broke recently. The current entry in the /etc/fstab file in my (Vanilla, non-university-managed) Ubuntu 16.04 is as follows:
# HY group directories