You build stuff with extrusions. There are wires. You want to keep things neat.
Here you go!
There are files for a 100mm length and a 150mm length, depending on the height of your printer. Then cut it to a convenient length.
Print single wall thickness.
I have now also done some in transparent PLA, and they are much more attractive with the refractive/reflective appearance.
(I tried thing:671994, but it didn't work for me. One of the legs snapped off when I tried to insert it, so I made my own version.)
I am printing in ABS. I had to open the enclosure to help it cool off fast enough.
.2mm layer height
1 shell, no infill
I did use a raft just to make sure it stayed stuck to the build platform.