OK, so this is a BIG one that's going to take a lot of work but it's going to be something that could really be a giant thing in the future.
Virtual People/Friends/Family.
Imagine your home, it is of course all mapped in 3D by your headset.
You can then have virtual people in your home, they will of course be powered by a form of AI to give them "life"
When wearing the headset, they will freely walk around your home, interacting with items.
Sitting on the sofa with your, watching TV with you.
You can have discussions with them, talk about their day, they will ask about your day.
You will build up relationships with them.
In time, they could even be family members which are no longer around, AI taking in all the data from a loved one, who you can still have with you.
Imagine a very elderly person who's lifelong partner has died, and they face the next 5 - 10 years being alone missing their single love, and being able to still see and talk to a representation of them instead of sitting there alone every dat.
Naturally with an Artificial person/s with you, you can imagine any possibility.
So there, Virtual Humans in your AR home.