Fishing float with indentations.
Benefits of having dimples:
Open-source, fully customizable, parameterized, source code file included. Created using ShapeScript.
Try to have less infill to keep it light, use supports. To make it waterproof, either use thick walls or coat in a thin layer of epoxy resin.
As for the filament, go with something UV-stable; use clear filament to make it “invisible”… or even better — try something that glows in the dark!
The author marked this model as their own original creation.