I rediscovered a nifty little utility I added to my bashrc a while back: goto. Goto is a short script that works as a bookmark mechanism for Bash. With it, you can set a bookmark directory, and then jump to that directory from anywhere else (with autocomplete). For example:
$ cd foo/bar/baz
foo/bar/baz$ goto . bookmark
foo/bar/baz$ cd /
/$ goto boo
foo/bar/baz$
It works by setting itself as a Bash autocomplete, so that bookmarks are autocompletable and available anywhere in Bash. A bookmark is itself nothing more than a symlink saved to ~/goto.
To install, you can wget -O - https://github.com/nicolasbrailo/Nico.rc/blob/master/bash/goto.sh > ~/.goto.sh and add it to your bashrc.