Making methods available within classes?

[combus]

I meant something like sharing methods between classes. Because I'm working with 2-3 classes, and there are some methods I use in every class, so I wanted to be able to use the same method in all classes w/o having to remake it in every class, but without using an extra class (because it would require to declare new objects, which are not required due the kind of methods I re-use, which are just simple voids). But I've confirmed that's not possible, just with use of extra classes. Thanks anyways