You can stick this Y-shaped support piece on a bamboo stick with the preferred length. Stick diameter is 16 mm max. The hole is conical to also acoomodate smaller diameters. Scale it up/down for your application.
Should be 100% infill at least in the hollow portions of the print, see 3mf or gcode files.
No supports, use PETG for better UV endurance or PLA.
The author marked this model as their own original creation.