Another interaction could be them collaborating on a project. Maybe they are in a situation where they need to build something or solve a mystery. Annabeth's strategic thinking combined with Estelle's fresh perspective could lead to an interesting and successful partnership.
One possibility is that Annabeth challenges Percy to a little competition related to the field trip. For example, if they are at a museum, they could see who can find the most interesting historical fact about an exhibit first. This would be a fun and friendly way for them to interact and also show off their knowledge.
In the fanfiction, they might initially be a bit wary of each other. Annabeth, with her intelligent and strong - willed nature, could be sizing Estelle up. Maybe Estelle would be in awe of Annabeth at first. For example, if they meet in a city setting, Annabeth might be showing Estelle some of the cool architecture she's studied, and Estelle could be asking lots of curious questions.
Well, they might have a lot of fun. Percy could use his water powers to create little water fountains for Estelle to play with in a safe way. Annabeth would probably be the more organized one, making sure Estelle eats her snacks on time and takes a proper nap. Maybe they'd tell her stories about their adventures, like the time they fought monsters. And Estelle would be in awe of them, looking up to them as these amazing heroes.
One possibility is that they become friends immediately. The elf could be really friendly and show Harry around the elf village or something. Another is that they start off on the wrong foot. Maybe Harry accidentally offends the elf at first, but then they work through it.
Perhaps they go on a family trip. During the trip, Pan might see something amazing like a rare animal or a beautiful waterfall. She'd run to tell Gohan and Videl, and they'd all share in the joy of the discovery. They could also have conversations around the campfire at night, with Pan asking about their past adventures and Gohan and Videl happily sharing their stories.
Naruto could get hugs from the Hokages. The First Hokage might pat him on the back and praise his strength. The Second Hokage could quiz him on his ninja knowledge. The Third Hokage would probably give him a warm smile and some encouraging words. And the Fourth Hokage would hold him tight, with tears in his eyes.
In some fanfictions, there could be a more complex relationship. Percy and Annabeth might be initially suspicious of the Kanes, thinking they have some hidden motives. And the Kanes might feel the same way about them. But as events unfold, they realize that they are all victims of a greater conspiracy. This could lead to a situation where they have to rely on each other not just for power but also for emotional support as they try to figure out what's really going on.
One possible positive interaction could be Narcissa helping Hermione understand some of the pure - blood wizarding traditions in a more in - depth way. Since Narcissa is from a pure - blood family, she has a lot of knowledge about it. Another could be Hermione using her logical thinking to help Narcissa out of a difficult situation, like a tricky political problem in the wizarding world.
They might have a friendly competition. For example, who can solve a time - related mystery faster.
Luffy might have an interesting interaction with Superboy. Superboy's struggle with his identity and Luffy's unwavering self - confidence could create a contrast. Luffy could encourage Superboy to be more true to himself.