Wyze cameras. They are cheap, resolution is plenty good enough, simple to set up, and secure enough for regular household. Easy to use app. You don't need to have a subscription fee if you don't want to. You can just add a memory card into the camera and it'll just record on the card in a loop. So if you get home and you see something happen pull the card and then it won't record over it and then you have basically a copy of what happened. A cheap 32 GB card will record a few days on a loop. That's usually plenty enough to catch anything unless you're on like a week long vacation. I have 128 gig card in the camera that faces our driveway and catches our front door. That way on the loop it records it records for about a week plus on that camera. That's kind of the main one.