The 2023 Advent calendar from the Centre for Accessible Information Technology (Zentralstelle für barrierefreie Informationstechnik) offers daily tips for designing accessible digital services throughout the Advent season. The series is posted on Twitter and includes current and additional tips from previous years' advent calendars. There is practical advice and instructions on various aspects such as web design, document creation and digital accessibility in general.

The Advent calendar can be found on the website of Bremen's Disability Commissioner (in German): Adventskalender 2023 der Zentralstelle für barrierefreie Informationstechnik