Order a few Wyze cams, put SD cards in them, be done with it. No cloud expenses, push notifications to your phone, they’re the Bic lighter of cameras. They’re reliable, yet disposable. They generate very little traffic on your network, continuous recording to the SD card inside, and push notifications with 10 second clips of motion alerts, and remote playback of recorded video. 32gb SD card will hold about 14 days of continuous recording.