Some suggestions:

- Not sure what they're called, but I've seen a lot of fully automated outdoor "locker stations" for packet deliveries

- Power bank "banks" or charging stations for smartphones in indoor spaces like malls

- QR codes on stickers/ads in public spaces are a sort of bridge between the physical and digital worlds

In some Asian countries electric scooters with swappable battery packs are very common, and they have roadside battery swap stations where (for a subscription fee?) you can take a freshly charged battery and leave your old one. Seems like a great idea.