When you have a question, not a dashboard to build: the Metrics explorer and recording rule templates
Dashboards answer the questions you knew you would ask. The other kind — “is it only this server, or all of them?”, “since when?”, “what does memory look like on the ones that restarted?” — used to start with creating a dashboard, adding a widget, picking a metric, and deleting the whole thing afterwards. Bleemeo now has a page for those questions. It is called Metrics: you write a PromQL query, run it, and look at the answer.