Earplugs of Peaceful Dreaming (Neo)

Earplugs of Peaceful Dreaming:

Minor magical item.

When worn while asleep, the wearer’s dreams become euphoric and peaceful, ensuring no nightmares are experienced.

Furthermore, they permit the wearer’s normal resistance to mind-affecting spells as if the wearer were awake.

If worn while awake, they will permit the wearer to voluntarily fall asleep simply by mentally commanding it, after which the normal effects of the Earplugs apply.

Reference
Chapter 235 "John The Psychomancer"