From May 22 to 26, the SPICE Workshop on Computational Quantum Magnetism took place. The who is who of researchers in the field met in the scenic setting of Schloß Waldthausen which lies in Lennebergwald, a natural reserve in immediate vicinity to Mainz. 64 participants from 42 affiliations in 19 countries came together to spent five days working on the most advanced computational techniques to study complex magnetic materials to examine the latest developments and challenges. The intensive program covering a wide range of aspects connected to Computational Quantum Magnetism incorporated various scientific talks and tutorials, as well as a poster session with numerous contributions from the students.