In this paper we would like to describe 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 B. Hauser and shows a nice music learn program for children. The second application is ASR (Augmented Sound Reality), realized by D, Dobler and P. Stampfl 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, M. Stangl and D. Zirnig implemented ARoom, a furnishing program using AR.