Well, you could include a 'Capture the Flag' game like they have at Camp Half - Blood. It would be exciting for the characters in the fanfiction. Also, for the party decorations, having floating Greek columns made of cardboard and painted to look like marble would be really cool. And don't forget about a 'prophecy - writing' station where guests can create their own prophecies, just like in the books.
A great idea for a Percy Jackson birthday party in fanfiction would be to have a 'Monster - hunting' activity. Create some fake monsters (maybe using stuffed toys or cardboard cut - outs) and have the guests go on a hunt. You could also have a special guest appearance by one of the minor characters from the series, like Grover. And for the cake, it could be in the shape of a trident, Percy's symbol.
One idea could be to set the fanfic at Camp Half - Blood. Have Percy's friends plan a surprise birthday party for him. They could organize a special quest just for the occasion, like finding a long - lost gift from Poseidon. The party could include a big bonfire with blue food and drinks, as blue is Percy's favorite color.
You can have Percy as the star of the party. He could lead some of the activities, like the Capture the Flag game. Annabeth could be in charge of the strategic part of the party, like setting up the quests or the monster - hunting routes. Grover could provide some musical entertainment with his reed pipes. And the other demigods could be the guests, each bringing their own unique skills to the party, like a child of Hephaestus could help with any mechanical or construction - related tasks for the party.
One fun game could be 'Capture the Flag, Olympian Style'. Just like in the books, two teams represent different cabins or gods. They have to use their 'powers' (like in the fanfiction, maybe some made - up powers related to their godly parents) to steal the other team's flag while protecting their own. Another game could be 'Mythological Charades'. Players act out different mythological creatures or gods from the Percy Jackson universe.
For example, in a game of 'Musical Thrones'. Instead of normal chairs, you can have thrones representing different gods. When the music stops, players have to sit on a throne and then quickly say a characteristic or power of the god that throne represents. If it's Poseidon's throne, they could say 'I can control water'.
There's a fanfiction called 'A Party for the Gods'. It's a bit different as it involves the gods crashing a party at Camp Half - Blood. It's full of chaos and hilarity as the demigods try to deal with the powerful and often unpredictable gods while still trying to have a good time at the party.
A 'Capture the Flag' game but with a Percy Jackson twist. Instead of regular flags, have one team's flag be the Golden Fleece and the other team's be the Helm of Darkness. The area could be set up like the Camp Half - Blood grounds with some obstacles. This would add an exciting element as players try to protect their precious item and capture the other team's.
First, know the characters well. Make sure Percy and his friends act in character. For example, Percy should be brave but also have his moments of humor. Then, create an interesting setting. It could be at Camp Half - Blood or in New York City. Add some unique elements like magical gifts or challenges. For instance, a gift that has a hidden prophecy. Also, use the mythology well. Incorporate Greek gods and monsters in a fun way, like having a mini - battle with a group of harpies as part of the party entertainment.
For a Naruto birthday party fanfic, you could write about a time - travel themed party. Naruto accidentally gets sent back in time to the day he was born. He meets his parents and all the people who were important in his early life. They all celebrate his birth together, and Naruto gets to experience a new side of his family and the village's history. Or perhaps a party where the whole village turns into a giant ninja - obstacle course for Naruto's birthday. Everyone competes in the course, and Naruto has to overcome all the challenges his friends and villagers set up for him.
How about an art - themed birthday? Set up different art stations with painting, clay - making, and drawing. The kids can create their own masterpieces to take home as party favors. You can also have a big mural that all the kids contribute to as a group activity.
A movie night party. Set up a big screen in the living room, make lots of popcorn, and let her choose her favorite movies to watch. You can also provide some comfy pillows and blankets.