I made this in Tinkercad to test for proper extrusion, flow and e step calibration. I just kept printing it over and over until it looked good. It gives you a little bit of everything from a tower/cone, a ring, some text, and basic shapes too. It takes less than an hour to print, so you get results faster than something like a cube or a benchy. I printed mine on my Ender 3 V2, which was not working very well upon arrival.