Fantasy One-Shot

The PCs are penniless soldiers who must destroy an overgrown demiplane. It might involve a cult.
There is a wise pack of lions who offers them aid.
The characters start at the scene of a murder. Early on they meet a friend of a character. If things are going nowhere an ally turns up with useful information.
Afterwards there is a reward of a cursed but powerful magic item.

The PCs are insane goblins who must find a sacrificial pet. A character is possessed by a ghost. It might involve elemental water.
There is a treacherous poet who tries to help them. they are the sibling of a character.
The characters start running away from something. Partway through they meet a friend of a character. If things get stuck a villain turns up.
At the end there is a reward of deeds to a city.

The PCs are blessed ogres who must find a priceless artifact. It might involve planar travelers.
There is a vengeful politician who falls in love with a character.
The characters start with an explosion. At some point they encounter a hostile spirit. If things get stuck a ghost gives them aid.
At the end there is a reward of the eternal thanks of a friend. Possible sequel... a character's homeland is under threat

The characters are good nobles who must deliver a blessed helmet.
It is at a cursed palace which has a spectacular view.
There are a family of helpful nobles performing a rite. And a corrupt guildmaster seeks to win a race of chariots.
At some point they discover an unexpected place to rest.
As the adventure progresses there is a series of disappearances

The PCs are troubled charlatans who must collect a bounty on a famous band of elves. The mood might be... tense
There is a treacherous priest of craft who comes with them. they are the employer of a character.
The characters start camped and about to be attacked. Partway through there is a wedding. If things are going nowhere a talkative NPC provides useful information.
Afterwards there is a reward of lots of platinum.