This is just what it looks like -- a planter (for small succulents) carved out of my favorite skull. It should make a nice centerpiece for any Halloween party.

It was designed to be as small as possible while allowing simple transplanting of the plants I had on hand. The base diameter is 35mm, and the depth is also 35mm, and it took about 4.5 hours to print at 0.2mm layer height. Of course, you can make it as much larger as your printer and time budget will support.