The problem with the ‘^’ key is, that it is on different positions for almost every language out there also being a secondary for a different other key … I once stumbled upon some technical reason but forgot it.
(edit: on german layouts, the ‘^’ is left of the ‘1’ key, afaik it’s ‘~’ on us layout?)
So while I would be interested if there is an easy way to do it - what I did is just use a different key. Like the Pause Key which is standardized and its almost never been used for anything nowadays 
PS: nice logo