Hell you can use one of those spinning tops the jewish people use to cause massive wind storms it's all relative in the end Itano and it's all up to you. You just need a way to design your character so he can be useful late game like branching from a weak early ability into something that makes you almighty late game. Like my guy he's got big constitution and goes all or nothing with his powers. He isn't the fastest and can have his guard breached if he isn't careful. It's all about roles.

Remember Fullbringers can pull on any object but specialize in one object special to them in whatever way and in which they can transform or use it to preform various effects like dirty boots being self explaining and invaders must die which allows the user to put people in a video game like area or cause some various effects in the real world.

I for example use my cross as a claymore which acts as a ranged weapon which flings energy (with great effort) or a heavy handed weapon to cleave enemies with.