Fantasy One-Shot

The PCs are imprisoned acolytes who must complete a ritual in an arcane planar fortress. A character is accompanied by an annoying sibling. It might involve acolytes.
There is a manipulative adventurer who works against them. they are the distant relation of a character.
The characters start outside some ruins. At some point they encounter quicksand. If things get stuck something starts following the group.
It finishes with a character or villain coming back from the dead.

The PCs are outcast folk heroes who must defend the base of powerful adventurers until they return. It is a campsite. One or more characters are infected with lycanthropy. The mood might be... whimsical
There is a shapechanging thief who tries to help them. they are the travel companion of a character.
The characters start at a disrupted wedding. Early on they encounter a magical trap. If things slow down someone tries to steal from them.
It finishes with a wedding.

The characters are working for a temple who must break a curse at a part-buried cave complex.
It is at a haunted cloud castle which is protected by a ghost.
There are a gang of celebrating cutthroats intoxicated. And a vengeful warlock seeks to burn everything to the ground.
At some point a door opens.
As the adventure progresses people start to gather for a wedding

The characters are all undead who must give something to a fiendish group of brigands. Two of the characters are former friends.
It is at an enchanted castle which is protected by a swarm of insects.
There are a gang of rowdy ogres meeting for an annual ritual. And a mastermind seeks to auction off a sacrificial chariot.
At some point a chase starts.
As the adventure progresses a portal slowly starts to open

The PCs are all small-sized characters that share a flying broomstick who must negotiate with a lucky bone fey. A character is being hunted by a faction. It might involve romance.
There is a young priest who has important information for them.
The characters start on the road about to encounter someone. At some point they encounter an elemental. If things are going nowhere a door opens.
At the end there is a wedding.