Hang an easily-removable dowel in a corner using these two 45-degree angled open-topped brackets. Designed for light-weight use (rolls of tape hung on a dowel in a storage closet, for one very specific example).
Includes screw holes for mounting to a wall.
Easily holds a 3cm diameter dowel with room to spare. Also fits smaller dowels, as the hanger is an open-topped semi-circle.
The author hasn't provided the model origin yet.