Powerline Ethernet surge protection
Solution 1:
Getting an AC line conditioner for your residence would indeed be the fix. This will keep your UPS devices and surge protectors from going bad before their time. A line conditioner on the AC mains provides a perfect cosine power wave at 50 or 60 Hz depending on where you are. There are devices that do this on a per outlet basis as well but those may not prove as useful.
The surge protection is not a trivial feature at all. I have terrible power spikes and surges all the time and I can tell you without UPS devices and phone line protectors I would be replacing equipment all the time.