Death Star grinder with small tripod preventing it from rolling away. It consists of 6 3D printed parts, including the display stand, and some electronics I extracted from a small flash light.

Most of the parts are screwed together except for the upper and lower part of the grinder these are held together by two magnets (Diameter: 6mm, Height: 3mm). Make sure you glue the magnets in the right direction.

The light source is a 3V LED which was soldered to a small PCB but you could also use a regular 5mm diameter LED and use a glue gun to hold it in place. The LED is connected to a 3x1.5V button cell battery (higher than the LED voltage but this is how it was in the flashlight) and is controlled by a slide switch which sticks out at the backside of the death star (http://uk.rs-online.com/web/p/slide-switches/7874855/). Since you can't apply glue directly to the button, I designed a small accessory to hold the button in place.

You can unscrew the bottom of the death star which functions as a reservoir and you can unscrew the top to mount the electronics and replace the battery if necessary.

The death star model is a remix of http://www.thingiverse.com/make:58673 designed by plainolddave.

The display stand is design by muckychris and can be found here: http://www.thingiverse.com/thing:216689

EDIT:
1) DS_TopSolid added:
This is a solid version of the top half of the grinder for those who don't want to put in the little light. If you print this file you do not have to print DS_TopCap and DS_ButtonLock anymore

2) DS_Bottom2 added:
This is the bottom of the grinder without an engraved dickbutt

EDIT:
An improved version without any electronics of this grinder can be found here: https://www.thingiverse.com/thing:3342152