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
The reward for retrieving the sacred scroll is usually 6,500 gold.
The Royal Diadem
The Bard's Music Score
Broken Vase
The Celestial Harp
The Claw of Sargon
The Cursed Sword
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
The Diadem of Oblivion
Magic Anvil
Medallion of Melchior
Njolner
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
Shield of Light
The Stone of Souls
You will receive 8,000 gold for the return of the Stone of Souls
Unicorn's Horn
The Holy Grail
The Storm Flower
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