How to create a 3D rotating line

How can I create a line that can rotate in two ways;

  1. 360 degrees on a xy plane
  2. at the same time rotate between xy plane and a z axis.

I was thinking the line will move itself like a cone but I don’t know how to start.

Skärmavbild 2020-03-22 kl. 02.02.24 (7.2 KB)

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Thank you so much!