I've tried a bunch of cheap security cameras off Amazon (after buying so many I mine as well have bought a whole security system) and I've had a few LaView ones rigged up around my house for about a year and a half. They plug into the wall but I wanted two outside, front and back. Outfront I got one of the light bulb to outlet plug adapters and duct taped it onto the side of the house. Outback there's no light or onning so I went super ghetto and got two empty water jugs and cut one side off of them, went pretty high on the house and superglued one jug them the camera underneath so it didn't get wet, got a 10ft micro usb and ran it down the house with the water proof gorilla tape and put a portable charger close enough to the ground to swap out every few days with the other water jug.

Now this is a very unappealing setup outback but just wanted to mention it to get some ideas flowing on how you can do pretty much anything for cheap, you could make a nice covering for the cameras with wood or something but its only temporary for me so water jugs work.

Here's a link to the cameras, nightvisions pretty good and you can go back 24 hours for free, buy cloud storage for cheap or just put sd cards in them: https://www.amazon.com/dp/B08F4YT84C/ref=cm_sw_r_sms_awdb_imm_H7M9CF1M6WA7CT2K2AC9?psc=1

Good luck and thanks for helping out our seniors.