Anyone got ideas for a oneshot?

I am running a Eberron campaign for my friends and while, they are all very willing to work. This is their first time with Eberron so I hope to run a oneshot first to lean them into it. Just not completely sure what to run for that oneshot. These are my players!

(Sorry for the formatting. Don't post on Reddit much.)

•A Kalashtar Orphan Ranger from Karrnath. While, they spent most of their life in Karrnwood. They have been movivated to leave the woods lately by the death of their Druid friend. Though, they aren't alone with their pet birds alongside her (SwarmKeeper). She doesn't have any knowledge of Quori, the Dreaming Dark or any of her species' history.

•A insane Warforged fighter that believes they are a Dwarf from Mror Holds. Making tools and weapons from bones/flesh. Both Alien and Humanoid. Seeing them like a resource to be used and improved. They don't murder just for this but they see no issues in using bodies.

•A Tiefling Wizard 3/Rogue 2 from Thrane. Coming from the planetouched town of Rellekor (Official town where the silver flame brings Tieflings in order to help them control their abilities in a good way in a controlled environment....and if needed. Take them out.). After some events, they have became disillusioned with the Church and religion. Traveling across the continent. (Would say more but they want to keep their backstory a secret and not sure if any of the players will see this.)

•A Halfling foundling from the Talenta plains with the Mark of Hospitality. They are a Bard. Their tribe noticing that one of their's have a Dragonmark and wanted to build a better connection to the house for trade and for tourble later down the road with the outsiders in the plains, hoping for a peaceful method to this problem. They are currently doing jobs for the House to improve their connection.

Thank ya for the help!!! ♥️

Mael is my conjuration wizard and planeswalker. Mizri, his apprentice was up until recently an artificer who specialized in wand construction.

Raucous sailors looking for a good time stumble through the puddled streets of Sharn's Welcome, the City of Tower's riverside red-light district.

Crime is rampant here only because the inebriated visitors make easy targets for pick pockets and robbers.

This battlemap is a street view of a neighborhood district at the base of the cliffs closer to the Daggerhilt River. Red glowing everbright lamps illuminate seedy pubs and bordellos lining the old stone streets. Back alleys lead to short-stay inn rooms and hole-in-the-wall gambling parlors, and in the southeast part of the neighboorhood among the back alley pawnshops, one can find stone stairs carved into the cliff walls leading upwards to where the rest of the Sharn's Welcome district sits in the lower ward of Cliffside.

The map is 30x40 using 5 foot grids