Well, there's a fanfic where they prank Carlisle by making his office look like a disco. They put up disco balls, flashing lights and played really loud disco music. It was hilarious. Also, the prank where they switched Rosalie's beauty products for really cheap and smelly ones. Rosalie was so angry and her reaction was quite memorable.
The information you provided is not enough to form a specific name or novel. Can you provide more context information such as the plot, theme, author, etc. so that I can better answer your questions?
Peter could play a really funny prank on the Avengers. He might use his agility to secretly attach some helium balloons to Captain America's shield. So when Cap tries to throw it, it goes all wobbly in the air because of the balloons. And for the Hulk, Peter could create a holographic image of a really cute kitten right in front of him. Since the Hulk is usually associated with destruction and anger, seeing a cute kitten would be a really unexpected and humorous situation.
In the 'Harry Potter Pranks Everyone' fanfiction, there could be some hilarious pranks. For example, a student might use a charm to make the Great Hall's ceiling show embarrassing memories of the teachers. Another prank could be to magically swap everyone's voices, so that when they talk, it comes out as someone else's voice. There could also be a prank where the Hogwarts Express gets diverted to a completely different location, and the students end up in a strange magical place full of odd creatures and unexpected challenges.
One common mischievous prank boys might do in school is swapping the teacher's textbooks on the desk when the teacher is out of the room. It can lead to a moment of confusion when the teacher comes back and tries to start the lesson.
One of the pranks Naruto might do is to mess with the Anbu's communication system. He could use his knowledge of chakra and some basic electronics (if we assume some modern - like elements in the fanfiction) to scramble their signals. This would make it difficult for them to coordinate with each other, and they'd be running around trying to figure out what's wrong while Naruto watches from a hiding place, having a great laugh.
Typically, Harry is one of the main ones. He has a knack for getting into and out of trouble with his pranks. Hermione might also be involved in some pranks in a more strategic way, using her vast knowledge of magic to create unique and elaborate pranks. And of course, the Weasley twins are almost always at the center of the most elaborate and chaotic pranks in the fanfiction.
One possible arrangement is that two people can sleep on one side and the third person on the other side. Or, they could all lie in a row, with each person having their own space along the length of the bed.