Various questgivers could have a slight leaning towards giving certain types of loot, depending on who they are, what their quest was that you completed.

Fire Themed: Flaming Weapons, Cold resistance items, Scrolls/wands of fire spells
Cold Themed: Cold weapons , Fire Resistance Items, Scrolls/wands of cold spells
Air Themed: Lightning And Thunder weapons, Scrolls/wands of lightning/weather spells
Earth Themed: Special Material Weapons, Special Material armors, Acid weapons, scrolls/wands of earth spells
Pious Themed: Holy, Pure Good, Flametouched, Cleric Items, Paladin Items, Blunt weapons, Shields, Cleric&pally Scrolls/wands
Lawful Themed; Monk Weapons, axiomatic, pure law weapons, Tower Shields, monk outfits
Rogue Themed: Anarchic, Chaotic Weapons, Finesse Weapons, Light armors, Shortbows
Wizard Themed; Daggers/clubs with spell bonuses, scrolls, wands, clickies, robes, Warforged Based Items
Nature Themed; Barbarian Style Great axes, Ranger Longbows, ranger scrolls, leather & Hide Armor armors

speaking of clickies I always thought they should have some UMD, even if it's very low , UMD of less than 20 for those classes that wouldnt know how to evoke them.





Ida's quest feature the fire caves: So his loot would be swinging towards cold weapons, fire resistance clothing, lesser elemental bane.