Spring is approaching. As in every good living room, one cleans oneself of old burdens. The attoworld team has also successfully completed its spring-cleaning. Unnecessary things that felt safe in drawers and dark corners of the laboratories were disabused and put out of doors. But hidden treasures also came to light again. Now the laser systems and the vacuum chambers are sparkling and flashing with joy. At the end of the clean-up there were white sausages from the boss himself. Many thanks to all those who helped to raise the work in the laboratories to a new level.