 Not sure what to do with your Raspberry Pi 3? Head over to Thingiverse and 3D print yourself a case. Admire your craftsmanship from printing said case, and use a cool color because it makes it look better. Mount that case in your rack, load Raspbian on it. Then from there, head over to Uptime Kuma, their GitHub, install it via Docker, then start setting up all of your servers. Once you have all your servers configured, you have a beautiful dashboard by which you can monitor all of your systems and the uptime and send yourself notices if any of these systems go down. It's a great tool. I highly recommend checking out Uptime Kuma. If you'd like me to do a more in-depth video on it, let me know in the comments. Thanks.