Hmm, here's a few that could potentially be implemented in augmented glasses, though I have no idea if they're implemented yet:
- Giving me directions via an overlay when I'm walking around without requiring me to pull out my phone
- overlay of a recipe when I'm cooking something new
- pointing out constellations in the night sky
- reminding me of people's names and/or upcoming plans with them
- price comparisons in grocery stores; the glasses read the prices and tell you how they compare to prices in other nearby stores
- (at the gym) correcting someone's form on weightlifting, with visual overlays
- taking pictures in general
- easy recording of ICE or police