Edit: Updated to fix the low spot that was at the top of the fish.

I saw a necklace on Etsy of a cross inside an ichthus, and thought, "A cross in the belly of a fish. How 'sign of Jonah'!" (Luke 11:29-30: "When the crowds were increasing, he began to say, 'This generation is an evil generation. It seeks for a sign, but no sign will be given to it except the sign of Jonah. For as Jonah became a sign to the people of Nineveh, so will the Son of Man be to this generation.'") I put "nisi signum prophetate Jonae" ("none but the sign of Jonah the Prophet") on the base in Latin since it's a present for my Latin teacher, who helped us read Jonah in that language. (The English translation is on the bottom face, though!)

I've also included a version of the base without the words.

If you remix the pedestal for something different to sit on it, be aware I chose to make the base top not quite as long as it is wide; you may or may not wish to change that for your project.

If your printer lays a good, even layer on top of supports, I recommend the full version, since it's centered. I also included it cut so that you can print the base top directly on your print bed and then glue the final thing together—just make sure before gluing that you've got it exactly centered!