Ivana Huckova shares her innovative project of monitoring a sourdough starter using Prometheus and Grafana Cloud, inspired by Christine Sunu's sourd.io. As a software developer at Grafana Labs, she utilizes an ESP32 development board connected to sensors to track the starter's temperature, humidity, and height, and visualizes the data in Grafana. The setup involves using an ultrasonic sensor for measuring the starter's rise, a DHT11 sensor for environmental conditions, and programming the ESP32 to send data to a Prometheus-compatible database in Grafana Cloud. Huckova details the process of setting up the necessary software and hardware, including installing Arduino IDE and relevant libraries, and provides insights into visualizing the data on Grafana dashboards. She emphasizes the utility of alerts for timely feeding and invites feedback and ideas from the IoT community, highlighting Grafana Cloud's capabilities for metrics and dashboarding.