Well, there is one possibility: a motorcycle helmet with an integrated or attached Bluetooth headset. While these kinds of helmets are intended first and foremost for bike-to-bike communication ...
There is very little difference between what you might call a Bluetooth helmet and an intercom. In the UK especially, the intercoms are sold as separate items and are simply the same technology ...
They have put together a neat Daft Punk helmet built from 3D printed parts, an Arduino, a Bluetooth module, a string of WS2812 addressable LEDs and a simple app. The helmet itself is 3D printed ...