relics of hyrule eastmarch grotto
I highly suggest simply exploring and finding the hint notes, but if you must know...


Blade of Evil's Bane:
 Eldergleam Sanctuary or Ancestor Glade (Dawnguard only)
 Recipes in Darklight Tower, Kilkreath Ruins, Hall of the Vigilant and Stendarr's Beacon

Hylian Shield:
 Labrynthian, Eldergleam Sanctuary, Blackreach. Also craftable

Mirror Shield Great Sea:
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 Lake Yorgrim, near Bronze Water Cave

Iron Boots:
 volskygge

Hover Boots:
 Voluruud

Terminan Shield:
 Entrance of Darkwater Pass
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 East of Rorikstead
 Talking Stone Camp
Gems are at
 Sunderstone Gorge (Vanilla) or Dayspring Canyon (Dawnguard)
 Arcwind Point
 North of Ravenscar Hollow, in a barrel underwater
 In the mudcrab-invested Nord ruin near the Apprentice Stone

Giant's Knife:
 Fallowstone Cave
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Golden Gauntlets:
 Forelhost

Silver Gauntlets:
 Ragnvald

Great Fairy's Sword:
 Blackreach - Silent Ruin

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Mirror Shield Desert:
 Kagrenzel
 Ansilvund

Hero's Clothes:
 Bleak Falls Barrow
 Ustengrav
 Sky Haven Temple

 Rimerock Burrow 
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 Brinehammer 
 Dean Men's Respite
 Avanchnzel
 Raldbthar

 Angarvunde
 Hag's End
  Haemar's Shame
 Folgunthur

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Hero's Armor:
 Blackreach - War Quarters
 Nchuand Zel - Armory
 Tolvald's Cave
 
 Snowpoint Beacon
 Forgotten Vale Inner Sanctum (Dawnguard only)

Arrows:
Light - Near Shrine to Peryite
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Ice - near The Chill
Fire - East of Geirmund's Hall

Spells:
Din's Fire - Silverdrift Lair
Nayru's Love - Shroud hearth Barrow
Farore's wind - Lost Valley Redoubt

Majora's Mask:
Northeast of Wreck of the Winter War, on an icy island
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Mirror Shield of the Well:
Yngol Barrow

Skull Hammer:
Kinolangdanzel

Staff of Skulltula:
Kinolangdanzel

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Bows:
Fairy: Secret Grotto in Rorikstead
Terminan: Valthume
Hero's: High Gate Ruins
Bow of the Great Sea: Top of Kinolangdanzel Tower
Zelda's Bow: The Door Behind the Gate

Sacred Shield:
Kinolangdanzel
Lost Echo Cave
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Magical Shield:
Liar's Retreat
relics of hyrule eastmarch grotto