Simple Star for top of Christmas Tree with room for led light
You will need to print and glue two parts of the model.
Ring can be usefull to strenght up the print where it is mostly needed. You can resize it on Z axis if you want it even stronger.
Transparent filament needed if you will use it for light.
Print with low infill if you want more 'clean' light or with highier infill for scattered light.