In this paper two use cases are shown that were developed within a flying arena for palm-sized Micro Aerial Vehicles (MAVs). At first, the technical details of the arena are presented. Next, the two use cases are in focus. Firstly, a use case where a MAV’s trajectory is replanned whenever a static or dynamic object (e.g. another MAV) obstructs the planned route is demonstrated through a drone race between two flying vehicles. Secondly, a method to detect and track a MAV using a camera system on a pan-tilt platform is presented. The proposed applications are tested in real-world experiments.