raspi-information-radiator: configures a Raspberry Pi as an information radiator, automatically launching Chromium to display a web page in full screen mode on boot. (This is based on the article HOWTO: Boot your Raspberry Pi into a fullscreen browser kiosk.)
raspi-expanded-rootfs: expands the root filesystem of a Raspberry Pi to fill the available space.
They’re also available on Ansible Galaxy.
The readme files for both roles include more information on how they work and an example of how to use them.
Both of them have some opportunities for improvement, and pull requests and issue reports are most welcome.