Drones are becoming more and more popular for their possible use in different scenarios, not only outdoor, but even indoor. In this context, indoor self-localization may become crucial and, clearly, GPS is not an option. In this poster we discuss a possible strategy for drone indoor self-localization based on printed markers, drone cameras and software that is generally used for augmented reality purposes. Achieved results from a preliminary experimental campaign demonstrate the effectiveness of the approach with localization errors in the order of 20cm.