Over the last three days, from Monday to Wednesday, 9 - 11 May, a multi-day workshop was held as part of the STEMerica project. The workshop and the activities on all three days were on the theme of the 3D world - on the first day participants learned to model in 3D using the Tinkercad program, on the second day they prepared the models they had made for 3D printing in the slicing program Cura, while on the third day they used the printed object to make moulds into which they poured chocolate and made chocolates of their own.