One possible new power could be the ability to control electricity. He could use it to stun enemies, power up machinery, or even create electromagnetic fields to deflect attacks. This would add a whole new dimension to his combat style and problem - solving skills.
One unique way in fanfiction is that he gets his powers from a virtual reality experiment. The scientists were trying to simulate the powers of a spider in a digital realm, but something went wrong and Peter Parker, who was a test subject, got the powers transferred to him in the real world.
Perhaps he gets a power related to mind control. This would allow him to influence the actions of his enemies or even make them fight among themselves. He could also gain a power that lets him absorb the powers of his defeated foes. So, every time he defeats an enemy, he becomes stronger by adding their powers to his own arsenal.
If Spiderman got new powers like super strength on top of his existing ones, he'd be able to take on much tougher foes. He could lift heavier objects to use as weapons or barriers. This would change his fighting style as he'd be more of a brute - force fighter in addition to his acrobatic skills.
It could be Tony Stark. In the Marvel universe, Stark is known for his technological genius. He might design a new suit for Spiderman as a way to upgrade his abilities and better protect him. Stark has the resources and the knowledge to create a high - tech suit with all sorts of advanced features.
His new powers might make some of his friends a bit wary at first. They could be worried that he's changing too much. But as they see him use his powers for good, they'll likely become more accepting. His enemies, on the other hand, will be more afraid of him and might target him even more.
It could be an ancient and powerful wizard. Maybe the wizard sees potential in Beast Boy and decides to grant him new powers to help him in his fight against evil.
Perhaps he gets the power of astral projection. He could send his spirit out of his body to explore areas that are otherwise inaccessible or to spy on his enemies. This would be a very useful power especially when dealing with secretive foes or trying to find hidden places in the mythological world.
It could be another character who is jealous of Lucy's new powers. Maybe a classmate or a rival in her community who wants those powers for themselves and will do anything to take them from Lucy.
Maybe Lucy discovers an ancient artifact that gives her new powers. For example, she could find a magic amulet that allows her to control the elements. Then she has to learn how to use these powers to save her town from a mysterious threat.