The PCs are all halflings that share a flying broomstick who must investigate the history of a glass animal. It might involve the Underdark.
There is a famous noble who works against them. they are part of same faction as a character.
The characters start in a dream sequence. At some point they meet an old foe. If things slow down they find a written note.
At the end there is a reward of an island temple.
The PCs work for a temple who must protect a part-buried farm. The mood might be... fun
There is a drunk assassin who betrays them partway through. they grew up with a character.
The characters start in a tavern brawl. At some point they encounter an elemental. If things slow down a new adventurer turns up.
It finishes with a reward of an audience with someone famous. Possible sequel... a foe returns more dangerous than before
The PCs are all gnomes that share a flying broomstick who must map out an overgrown monster graveyard. It might involve the Feywild.
There is an eccentric politician who sets them the quest. they are the childhood friend of a character.
The characters start waking at a shipwreck. At some point they encounter a new potential ally. If things are going nowhere an animal messenger arrives.
At the end there is a family gathering. Possible sequel... a clue from a reward or treasure points to an infamous dungeon...
The PCs are hungry tieflings who must deliver a gnomish relic. It might involve air.
There is a feared villain who offers them aid.
The characters start during an attempted escape. Early on they meet an intelligent beast. If things slow down a planar portal opens.
It finishes with a reward of another quest.
The PCs are shapechanging bards who must destroy a dwarven underwater temple. The mood might be... tense
There is a wise poet who wants to do the same thing.
The characters start in a chase scene. Early on there is a funeral. If things get stuck they discover a secret door.
At the end there is a reward of the eternal thanks of a friend.