Actually @MajorMajormajormajor@lemmy.ca if you want a quick and dirty option, I just used a windows tablet I had on hand and strapped it to the crib along with a USB webcam along with OBS studio with the RTSP server plugin
If you want night vision, make sure to pickup a webcam with IR
After that you can just open the stream with VLC, and VLC is available on all major platforms