This paper describes three student projects developed at the University of Applied Science at Hagenberg (media technology and design) using ARToolKit. All projects were implemented by students during their semester projects or during their master thesis. MusicAR is the first application presented in this paper. It describes the master thesis of a student and shows a nice music learning program for children. The second application is ASR (augmented sound reality), realized by two students during their semester project. ASR allows the user to place 3D sound sources and gives the user an acoustic 3D impression of the sound sources. Finally, two students implemented ARoom, a furnishing program using AR.