Hm. Pine64 is making a bone conduction headphone set which is in some sense open hardware. https://pine64.org/2024/03/17/march-update-making-waves/
(They are soliciting suggestions on a name.)
Briefly around 2010 I got a chance to try out one of the final-version Google Glass units, and although the Google Glass itself was fucking terrible, it convinced me that a covert bone conduction headphone clipped to your glasses and paired to your phone, which you send commands/queries to by tapping in Morse code either on the surface of your phone or on some sort of smart ring and which responds by TTS in the bonephone, would be really cool
@mcc I have a setup kind of like this! xReal Air Pro 2 glasses for the display, AfterSkohz OpenMove bone conduction headphones for audio, and a Tap XR for input. I don't have TTS set up yet, but I was thinking that's the next step. The thing that's holding me back on that is that I don't have a great TTS-compatible way to navigate and edit code. I should try setting it up for something easier like texting, though.