Is there any kind of activity monitor built into eero? I'd like to be able to see what websites my children are going to.
There currently isn't anything like that available. You could post it as a suggestion in the discussion & feedback location linked below.
Hey stroebele -- if you set your DNS up with OpenDNS, then you can see what websites they're going to based on the DNS requests, and also provide some protection against malicious and inappropriate content.
Unfortunately, that only applies to the primary network -- it does not apply to the guest network. That's hard wired to the Google DNS servers (unfortunately -- which is a separate feature request).
I would love to see that done. I used to have Almond mesh network and it was one of the best features on it. Eero is just too good of a wi-fi mesh system overall for me to switch to anything else at this point, but I can't imagine that this feature would be too hard to add to Family profiles. And at $99 yearly subscription cost I feel like it should be a must.