Blue Tooth USB dongle for the controller?

Does such a thing exist?
|___Yes. - Where can get one?
|___No. - Will such a thing exist?

It sounds like you want to move from a direct USB connection between your PC and controller to some form of wireless connection so that you can have mobility.

Google “Wireless USB hub”

Even so, I don’t know that the Inventables drivers would work across the bridge software. Perhaps someone here knows.