Source Core Rulebook pg. 633 4.0
A character can wear only 10 magical items that have the invested trait. None of the magical effects of the item apply if the character hasn’t invested it, nor can it be activated, though the character still gains any normal benefits from wearing the physical item (like a hat keeping rain off their head).


Accompaniment Cloak, Aeon Stone, Alchemist Goggles, Alchemist's Haversack, Aluum Charm, Amulet of the Third Eye, Ancestral Embrace, Ancestral Geometry, Anklets of Alacrity, Arachnid Harness, Archivist's Gaze, Arctic Vigor, Armbands of Athleticism, Armbands of the Gorgon, Armor of the Holy Warrior, Armory Bracelet, Artificer Spectacles, Autumn's Embrace, Avalanche Boots, Backfire Mantle, Barbed Vest, Barding of the Zephyr, Barding Saddle, Bastion of the Inheritor, Beguiling Crown, Bellflower Toolbelt, Belt of Giant Strength, Belt of Good Health, Belt of Regeneration, Belt of the Five Kings, Berserker's Cloak, Bewitching Bloom, Black Hole Armor, Blade Byrnie, Blast Foot, Blast Suit, Blazons of Shared Power, Blessed Tattoo, Blightburn Ward, Bloodline Robe, Bomber's Saddle, Boots of Bounding, Boots of Dancing, Boots of Elvenkind, Boots of Free Running, Boots of Speed, Boozy Bottle, Bort's Blessing, Bottomless Purse, Bound Guardian, Bracelet of Dashing, Bracers of Armor, Bracers of Devotion, Bracers of Missile Deflection, Bravery Baldric, Breastplate of Command, Breastplate of the Mountain, Broken Tusk Pendant, Brooch of Inspiration, Brooch of Shielding, Candlecap, Cape of Grand Entrances, Cape of Illumination, Cape of the Mountebank, Cape of the Open Sky, Cassisian Helmet, Cassock of Devotion, Cauldron of Nightmares, Celestial Armor, Channel Protection Amulet, Chaos Collar, Choker of Elocution, Circlet of Persuasion, Clandestine Cloak, Clarity Goggles, Cloak of Elvenkind, Cloak of Feline Rest, Cloak of Gnawing Leaves, Cloak of Immolation, Cloak of Repute, Cloak of the Bat, Cloak of the False Foe, Clockwork Cloak, Clockwork Helm, Cloister Robe, Collar of Empathy, Collar of Inconspicuousness, Collar of the Eternal Bond, Communication Pendants, Compass of Transpositional Awareness, Containment Contraption, Conundrum Spectacles, Cordelia's Construct Key, Corpseward Pendant, Corruption Cassock, Coyote Cloak, Crafter's Eyepiece, Crown of Insight, Crown of the Companion, Crown of the Fire Eater, Crown of the Kobold King, Crushing Coils, Cryolite Eye, Curtain Call Cloak, Dancing Scarf, Daredevil Boots, Deepdread Claw, Demon Armor, Demon Mask, Detector Stone, Devil's Bargain, Devil's Luck, Diadem of Intellect, Dinosaur Boots, Diplomat's Badge, Diver's Gloves, Doubling Rings, Dragon Handwraps, Dragon Rune Bracelet, Dragon Turtle Plate, Dragonplate, Dragonscale Amulet, Dread Blindfold, Drover's Band, Druid's Crown, Druid's Vestments, Dweomerweave Robe, Earthglide Cloak, Eidolon Cape, Electric Eelskin, Emberheart, Empathic Cords, Energizing Lattice, Energy Robe, Enveloping Light, Envisioning Mask, Ethersight Ring, Everyneed Pack, Exploration Lens, Extraction Cauldron, Eye of Fortune, Eye of the Unseen, Eye of the Wise, Eye Slash, Eyes of the Eagle, Faerie Queen's Bower, Faith Tattoo, Familiar Tattoo, Fearless Sash, Fiendish Teleportation, Fire-Jump Ring, Fleshgem, Forgotten Shell, Forgotten Signet, Fortune's Favor, Frostwalker Pattern, Fulcrum Lenses, Fungal Armor, Gaffe Glasses, Gearblade, Gelid Shard, Genealogy Mask, Ghastly Cauldron, Ghoul Hide, Glasses of Sociability, Gloves of Carelessness, Gloves of Storing, Goggles of Night, Golden Legion Epaulet, Golem Stylus, Gorget of the Primal Roar, Goz Mask, Grasp of Droskar, Grim Ring, Grimoire of Unknown Necessities, Guardian Aluum Charm, Gunner's Bandolier, Hag Eye, Hand of the Mage, Hand-Hewed Face, Handwraps of Mighty Blows, Harmonic Hauberk, Hat of Disagreeable Disguise, Hat of Disguise, Hat of the Magi, Headband of Inspired Wisdom, Headbands of Translocation, Healer's Gloves, Heartstone, Hellfire Boots, Helm of Underwater Action, Herd Mask, Hexing Jar, Homeward Swallow, Horned Hand Rests, Horns of Naraga, Horseshoes of Speed, Hosteling Statuette, Hunter's Arrowhead, Hunter's Brooch, Icy Disposition, Immaculate Holsters, Immortal Bastion, Impenetrable Scale, Inexplicable Apparatus, Infernal Health, Instinct Crown, Jack's Tattered Cape, Jerkin of Liberation, Key to the Stomach, Ki-Channeling Beads, Knapsack of Halflingkind, Laurel of the Empath, Library Robes, Lifting Belt, Linnorm's Sankeit, Locket of Sealed Nightmares, Lost Ember, Lover's Gloves, Lucky Draw Bandolier, Magic Armor, Mail of Luck, Majordomo Torc, Mantle of the Amazing Health, Mantle of the Grogrisant, Mask of Allure, Mask of Mercy, Mask of the Banshee, Mask of the Cursed Eye, Mask of Uncanny Breath, Master Magus Ring, Medusa Armor, Memoir Map, Merchant's Guile, Mercurial Mantle, Messenger's Ring, Metuak's Pendant, Mind's Light Circlet, Miogimo's Mask, Mirror Goggles, Mirror of Sleeping Vigil, Mirror Robe, Miter of Communion, Moonlit Chain, Moonstone Diadem, Mortal Chronicle, Mudlily, Navigator's Star, Necklace of Fireballs, Necklace of Knives, Necklace of Strangulation, Nemesis Name, Nightmare Cudgel, Nosoi Charm, Numerian Steel Breastplate, Oath of the Devoted, One Hundred Victories, Open Mind, Oracular Crown, Ouroboros Buckles, Pact of Blood-Taking, Pactmaster's Grace, Pathfinder's Mentor, Pathfinder's Pouch, Pendant of the Occult, Perfected Robes, Persona Mask, Phantom Shroud, Phylactery of Faithfulness, Pilferer's Gloves, Plate Armor of the Deep, Poisonous Cloak, Prismatic Plate, Psychic Brigandine, Psychopomp Mask, Purloining Cloak, Quick Runner's Shirt, Quick Wig, Raven Band, Reading Glyphs, Reef Heart, Reflexive Tattoo, Remorhaz Armor, Rhino Hide, Rhinoceros Mask, Right of Retribution, Ring of Bestial Friendship, Ring of Climbing, Ring of Counterspells, Ring of Discretion, Ring of Energy Resistance, Ring of Lies, Ring of Maniacal Devices, Ring of Minor Arcana, Ring of Observation, Ring of Ravenousness, Ring of Recalcitrant Wishes, Ring of Sneering Charity, Ring of Spell Turning, Ring of Stoneshifting, Ring of Sustenance, Ring of Swimming, Ring of the Ram, Ring of the Tiger, Ring of the Weary Traveler, Ring of Torag, Ring of Truth, Ring of Wizardry, Robe of Eyes, Robe of the Archmagi, Rune of Sin, Rusting Carapace, Sage's Lash, Sandals of the Stag, Sarkorian God-Caller Garb, Scarab Cuirass, Scroll Case of Simplicity, Secret-Keeper's Mask, Self-Emptying Pocket, Shade Hat, Shadewither Key, Shadow Signet, Shadowed Scale, the Jungle Secret, Shadowmist Cape, Shapespeak Mask, Shared-Pain Sankeit, Shifter Prosthesis, Silent Heart, Silhouette Cloak, Skinsaw Mask, Skittering Mask, Sleeves of Storage, Slippers of Spider Climbing, Sluggish Bracelet, Smogger, Soaring Wings, Soulspeaker, Spangled Rider's Suit, Specialist's Ring, Spectacles of Inquiry, Spectacles of Piercing Sight, Spectacles of Understanding, Spiritsight Ring, Staff-Storing Shield, Stag's Helm, Stalk Goggles, Stalwart's Ring, Stampede Medallion, Star Chart Tattoo, Starfaring Cloak, Stargazer, Staring Skull, Stole of Civility, Stone of Unrivaled Skill, Sun Sight, Sun Wheel, Sure-Step Crampons, Swarmeater's Clasp, Swarmform Collar, Swiftmount Saddle, Tactician's Helm, Taleteller's Ring, Talisman Cord, Tears of the Last Azlanti, Telekinetic Converter, The Bear, The Beating, The Big Sky, The Brass Dwarf, The Carnival, The Cyclone, The Demon's Lantern, The Desert, The Empty Throne, The Fiend, The Forge, The Hidden Truth, The Juggler, The Keep, The Lens of the Outreaching Eye, The Liar, The Locksmith, The Lost, The Marriage, The Midwife, The Mountain Man, The Owl, The Paladin, The Publican, The Rabbit Prince, The Rakshasa, The Sickness, The Silent Hag, The Snakebite, The Survivor, The Tangled Briar, The Theater, The Trumpet, The Tyrant, The Uprising, The Vision, The Waxworks, Third Eye, Thoughtwhip Claw, Thousand-Blade Thesis, Thrower's Bandolier, Thunder Helm, Thunderblast Slippers, Titan's Grasp, Tlil Mask, Tooth and Claw Tattoo, Toshigami Blossom, Tracker's Goggles, Tradecraft Tattoo, Triangular Teeth, Trollhound Vest, Troubadour's Cap, True Name Amulet, Umbraex Eye, Umbral Wings, Unbreakable Heart, Unending Youth, Unmemorable Mantle, Ursine Avenger Hood, Varisian Emblem, Vaultbreaker's Harness, Vengeful Arm, Venomed Tongue, Ventriloquist's Ring, Vial of the Immortal Wellspring, Victory Plate, Viper Rapier, Voyager's Pack, Walking Cauldron, Warden's Signet, Warding Tattoo, Wardrobe Stone, Warrior's Training Ring, Wasp Guard, Waverider Barding, Wayfinder, Whisper of the First Lie, Whispering Staff, Wig of Holding, Wildwood Ink, Winged Boots, Wolfjaw Armor, Wrestler's Armbands, Wyrm on the Wing