Based on @InqEnzo s great work: https://www.printables.com/model/257697-dyson-v11-attachment-holders
Attachment holder optimized for Dyson V15s detect hair screw tool. Other tools will fit as well.
The author remixed this model.
Unfortunately the V15s detect hair screw tool (with power connection) did not fit in any of the holders. So I modified V3. Now there's enough space for the power connection. I also adjusted the position of the screw holes for a better fitting directly on the wall.