Monitoring mixins, as discussed by Tom Wilkie at PromCon in Munich, offer a solution for creating reusable templates for Grafana dashboards and Prometheus alerts, addressing common issues with mismatched labels. These mixins allow for dynamic configuration by separating labels from the alert and dashboard templates, enabling easier updates and customization. Wilkie explored various methods for achieving this flexibility, ultimately favoring Jsonnet for its ability to handle variables, conditionals, and merges in configurations, which simplifies the integration of mixins. Jsonnet's capabilities allow users to override default settings, adapting to changes in upstream labels without manually reconfiguring alerts and dashboards. To facilitate the use and management of these mixins, a package manager called Jsonnet-bundler was developed, inspired by existing package management tools. This innovation has led to the creation of widely adopted mixins like the Kubernetes mixin, which has garnered contributions from major organizations and is set to be incorporated into future OpenShift versions. The concept of mixins is gaining traction within the community, with new contributors developing mixins for various applications, including unexpected domains like NASA's space weather monitoring.