Yup, many laptops even have a sim card slot so with that you could even configure it to fall back to mobile data in case of a power outage that also takes out your homes wired internet.
I have a thinkpad at work that has been in that role for years. Its the central syncthing node for like 10 other laptops and computers. It then also does regular backups to off site storage in case anything bad happens with the syncthing setup.
With a built-in ups.
Yup, many laptops even have a sim card slot so with that you could even configure it to fall back to mobile data in case of a power outage that also takes out your homes wired internet.
I have a thinkpad at work that has been in that role for years. Its the central syncthing node for like 10 other laptops and computers. It then also does regular backups to off site storage in case anything bad happens with the syncthing setup.