This plugin can toggle from one thing to another.
For example:
True <-> False
== <-> !=
+ <-> -
It will (try to) toggle whatever item the cursor is over when :Voggle is called.
So you can just bind that to some key with for example: nmap t :Voggle<Enter>
You can also toggle between more than 2 things, like: A -> B -> C -> A
This plugin was made mostly for personal use and for me to learn some basic vimscript, but feel free to use it and/or give me suggestions.