Clicky

A clicky is a magic item that, when activated, casts a spell or effect.

Clickies usually come with a number of charges/rest equal to either 1, 3 or 5, and cast a spell at the minimum caster level required to obtain it (with the exception of some static items).

Clickies can be any armor or helmet but are most common on rings, belts and other accessories.

Not all spells can be found on clickies, but a number of useful ones can be found, if you farm enough.

List of clickies from random generation

 * First-level spells: Bless, Burning Hands (?), Cause Fear, Detect Secret Doors, Divine Favor, Grease, Jump (spell), Mage Armor, Protection from Evil, Ray of Enfeeblement, Shield (spell), Shield of Faith, Tumble (spell)
 * Second-level spells: Aid, Bear's Endurance[3], Bull's Strength[3], Cat's Grace[3], Daze Monster, Eagle's Splendor[3], Fox's Cunning[3], Hypnotic Pattern, Invisibility[3], Lesser Restoration, Owl's Wisdom[3], Resist Energy (specific element)
 * Third-level spells: Halt Undead, Haste[3], Heroism, Protection from Energy (specific element), Rage, Prayer, Slow, Water Breathing
 * Fourth-level spells: Bestow Curse, Crushing Despair, Divine Power, Fear, Remove Curse, Solid Fog[1]

A sampling of popular clickies

 * Feather Cloak - Your first (of many) items you'll seek to get.
 * Visor of the Flesh Render Guards - a 7-minute Death Ward spell.
 * Ring of the Ancestors - A Raise Dead spell clicky.
 * Madstone Boots - Major boosts to ability stats for the price of losing spell casting ability.