Heh, Splunk is way overkill for what I need, but they have a free 10GB Dev license that you have to renew every 6 months, and building a custom COVID dashboard during the first few months of 2020 kept me sane. Here's my home/lab "prod":

Homeserver: Ryzen 3950x, 64GB RAM, Ubuntu 22.04 DNS: 1 RPi 3B+ and 1 RPi 400 running pihole and Unbound Edge router/firewall: Palo Alto PA-440 Switch: Cisco 2960 24-port w/PoE AP: Aruba AP-345 in Instant mode

Have you used splunk's free tier? It's easy to setup, 500mb/day ingest free, and it's pretty easy to use (easier than grafana imho.) If they're using it professionally then why not at home?