Just a quick mash-up in OpenSCAD of Paul Murrin's excellent star to enable me to join the pieces together without glue and insert LEDs into the points
I printed this with %0 fill, 3 shells at 0.2mm layer height, 120mm/s travel on a Replicator2 in natural PLA. Each point takes about an hour.
Print 11 points, 1 base, 25 connectors.
Get one cheap (2.99) set of USB 20 LED fairy lights like these:
Insert an LED into each point as you push the connectors between the points.
Finish by inserting the 8 spare LEDs into the cavity and then push the base into place making sure you place the cable in the slot.
If you want to modify the SCAD file, you will need to download Paul's original STL file.