Well, in 'Land Before Time' TF fanfiction, a cool concept could be that Spike, the stegosaurus, transforms into a super - strong version of himself. He could then use his newfound strength to protect the group from larger predators. Maybe there could be a TF where Ducky discovers she can communicate with all kinds of animals, not just her own kind. This would open up new ways for the group to get information and resources. Also, a transformation where the Great Valley itself changes in some way, like growing magical plants that give the characters new powers would be really interesting.
One idea could be a transformation where Littlefoot gains the ability to fly like a pterodactyl for a short time. This would change the dynamics of his adventures as he could scout ahead or reach places that were previously inaccessible. Another idea is a TF where Cera becomes more docile and learns to cooperate better with the group, leading to new friendships and different storylines within the group. And a third idea could be a TF that combines the characters with elements from another prehistoric era, like having them encounter and interact with ice - age creatures in a transformed state.
One idea could be exploring the relationship between Littlefoot and his mother more deeply. Maybe write a story where he has dreams that give him more insights into her. Another idea is to create a new adventure for the gang where they encounter a completely new type of dinosaur species that has unique behaviors and abilities. A third idea could be to write a fanfiction set in the future of the Land Before Time world, seeing how the characters have grown and how their society has changed.
A great concept for this fanfiction would be a sort of 'what if' scenario. What if the Great Valley in 'Land Before Time' was discovered by the Vikings from 'HTTYD'? The Vikings might see it as a new place to settle, but they would have to deal with the dinosaurs already living there. The dinosaurs, on the other hand, would be faced with these strange new creatures (humans and dragons) invading their home. This could lead to a series of conflicts and alliances as both sides try to co - exist.
One idea could be a human from the modern era somehow getting transported to the Land Before Time world. They could use their knowledge of modern things like first aid to help the dinosaurs when they get injured. For example, when Littlefoot's mother is hurt, the human could try to stop the bleeding with a makeshift bandage.
One idea could be Littlefoot meeting a new type of dinosaur that has unique abilities. For example, a flying dinosaur that can communicate with the Great Valley dinosaurs in a special way. Another could be Littlefoot having to lead the group through a new and dangerous area filled with strange plants and unpredictable weather.
One idea could be a crossover with dinosaurs from different eras. For example, bringing in some of the more well - known Cretaceous dinosaurs to interact with the characters from The Land Before Time. They could face a common threat together, like a huge natural disaster that forces them to cooperate.
Well, a great fanfiction idea might involve Chomper having a special power that he discovers. For example, he can communicate with plants and they help him find hidden places or warn him of danger. Also, a story about Chomper's family history could be really interesting. What if he finds out he has a long - lost relative? This could lead to all sorts of adventures as he tries to find this relative.
One idea could be a human explorer getting lost in the prehistoric world of 'Land Before Time'. They could form an unlikely alliance with Littlefoot and his friends, teaching them about human ways while also learning about the dinosaurs' survival skills.
Perhaps there could be a magical element in the fanfiction that causes the transformation. A strange comet passes by and its energy alters the DNA of the dinosaurs. As a result, they start to transform into hybrids of different species. This would lead to a lot of confusion and also new opportunities for cooperation and conflict among them.
One idea could be Ducky getting separated from the group during a big storm and having to find her way back. Another could be Ducky making an unlikely friendship with a new dinosaur species that the others are initially afraid of. Or perhaps Ducky discovers a hidden place in the valley that has special plants that can heal any injury.
One idea could be an OC who has a special ability to communicate with a previously unknown species in the Land Before Time world. This could lead to new alliances and adventures for Littlefoot and his friends.