The list of mini-quest items you may need to receive are as follows, unless otherwise started the reward is usually 10,000 gold:
The Sacred Scroll
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The reward for retrieving the sacred scroll is usually 6,500 gold.
The Royal Diadem
The Bard's Music Score
Broken Vase
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The Celestial Harp
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The Claw of Sargon
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The Cursed Sword
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As tempting as it might be to wield this sword as your own with it being indestructible and dishing out 30-35 damage, remember, it's called 'cursed' for a reason. Whilst you use it all of your attributes are decreased by 20.
The Dragon Scale
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The Diadem of Oblivion
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Magic Anvil
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Medallion of Melchior
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Njolner
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Luckily Njolner isn't cursed; so if this indestructable weapon's 30-40 damage is better than your current weapon, you might as well use it, if you can, because it adds +30 to your strength and +40 to your dexterity.
The Path Book
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Shield of Light
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The Stone of Souls
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You will receive 8,000 gold for the return of the Stone of Souls
Unicorn's Horn
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The Holy Grail
The Storm Flower
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Kill Buzbal The Furious
Buzbal the furious is a purple-colour chief ratman, being a 'boss' he is harder to kill than your average cheif rat man. For this challenge you will receive 4,800 gold.
Kill Nosferatu
Nosferatu, as you may have guessed, is a vampire, again he is harder to kill than your average vampire.
Kill Evil Garth