This is my approach for the #ElectromakerKitsCompetition. This design includes the stem and the shape of the lamp only.

As the competition rules stipulate the bottom case and LED mount must be reused from the original Mood Lamp. Get the missing STLs of these parts from https://www.electromaker.io/kits/led-mood-lamp

I do not like any kind of support. Therfore my design can be printed without any support.

You will need 5 identical pieces of the stem. The stems and the shape must be printed in vase mode (called "Sprialize Outer Contour" in Cura slicer) without top and bottom layers and about 5mm of outside brim applied. Please do not remove the brim after printing has finished. The stem bottom and top plate have to be printed in normal mode with the flat surfaces facing to the bed.

Stick the 5 stems through the dedicated holes of the bottom plate. The other ends of the stems have to be pushed into the holes of the top plate. Depending on the accurancy of the printer a little bit of sanding may be necessary for the holes. The brim helps gluing the stems into place at the bottom plate. The stem bottom and top parts have round guide structures to center them to the original parts easily.

Now stick the mounted stem into the bottom case and te LED mount, apply the electronics, attach the shade and have fun.