Which jewish practices are based solely on the Zohar and later texts based on the Zohar such as the writings of Rabbi Yitzhak Luria?

Some of my own findings:

 - Not walking 4 amos before washing netilas yadayim when you wake up in the morning. (Zohar)
 - [Upsheren][1] not cutting a boys hair until he is 3 years old (Arizal)

  [1]: https://en.m.wikipedia.org/wiki/Upsherin