So I'm looking for a home dashboard to display my services in a kiosk of sorts for my home. I'm thinking a calendar with events, rotating photos display from Immich (Docker Google Photos replacement), meal plan from Mealie (Docker), and others.

Is there something out there that will let me integrate custom webpages in a modular, elegant format, that I can self-host? What I've researched so far doesn't seem to give me the freedom to use the services I want.

Dakboard is elegant enough, but from what I can see isn't super customizable and requires you to use their integrations with the free tier.

MagicMirror2 is an interesting option, provided I just use it sans mirror.

Have you looked at Dashy or Homepage? There is a GitHub linked from the selfhosted subreddit with a bunch of options but it may depend on how your calendar and other services are running. Here is the dashboard section: https://github.com/awesome-selfhosted/awesome-selfhosted?tab=readme-ov-file#personal-dashboards

We're pretty happy with our Dakboard. The paid tier isn't expensive and if it does what you need, it's worth it.