I followed up on Devon's original idea (https://news.ycombinator.com/item?id=38457815) with a redesigned one that works with both prompts and images + prompts, and reads the responses back to you in the glasses.
A bit of annoying to set up the whole reading back to you part, but totally doable.
Pros: + Done via a browser extension + No need for a server + No need for fake FB accounts, official way to make one
Cons: - Reading back involves quite a setup with FB apps & pages