This is Lamp Stand for curved lithophanes fixed for 10 cm diameter with sloth for Male / Femele USB cable with USB bulb. It can also be used as a candle stand if u put the candle in Glass on the ring  if you remove the bulb  to protect lithophane from the flame. Sadly the Photos are old  this is updated version with smoother outside part.

No support needed and just standard PLA settings.