Does anyone actually use ChatGPT’s voice mode? It seems technically impressive, but when I try using it, it feels… deeply uncomfortable talking to a machine like you would a person. Treating it like you would a person feels silly: It’s not a person, it doesn’t have any life experience or anything interesting to say, it doesn’t have real opinions or anything worth talking about that isn’t a direct answer to your quest…
That's why the form factor should be a wand. Flourish it to activate, and speak your spell.