Sphere Torture, Customizable
A sphere that you can modify to be a bowl, a ring, a bracelet, a wheel, a decorative lantern with LEDs inside.
Several tools provided, with very few limitations. It is probably easier to make a mistake rather than print what you want, so be careful.
Make the sphere, hollow it out, slice off the top and bottom, add a base. If you make a solid object like a wheel, you might want to control the axle diameter, otherwise leave it at zero.