D&D One Shot

The PCs are mutant rogues who must protect a sacred wizard's tower. The mood might be... grim and gritty
There is a drunk warlock who offers them aid.
The characters start with an attempted theft. At some point they find a useful magic item. If things slow down a chase starts.
Afterwards there is a reward of deeds to a village.

The PCs are heroic goblinoids who must make a trade with a celestial yeti. The mood might be... fun
There is a religious noble who tries to help them. they grew up with a character.
The characters start during a heist. Partway through they encounter a trapped chest. If things get stuck someone tries to steal from them.
It finishes with an idyllic rural scene.

The characters are insane humans who must find a fey tailsman.
It is at a ruined library which is associated with undead.
There are elves resting. And a bugbear chief seeks to turn into a theme park a magical cloud castle.
At some point something attacks characters.
As the adventure progresses people start dying in different ways

The PCs are religious dragonborn who must protect a floating underwater temple. A character is being hunted by a a gnomish aristocrat. It might involve sea.
There is a desperate healer who works against them. they are the drinking companion of a character.
The characters start during an attempted escape. Partway through they encounter a tornado. If things are going nowhere one of their allies tries to leave.
Afterwards there is the characters splitting up treasure.

The characters are mercenary nobles who must map out a dwarven genie's palace. A character is celebrating a birthday.
It is at a cursed farm which is disguised by a hallucinatory terrain.
There are a pack of starving goblinoids holding a funeral. And a goblin boss seeks to ransack a haunted mage academy.
At some point there is a strong wind.
As the adventure progresses a series of spectral laughs signal the arrival of an elder being