[Muffet smiles and shakes her head gently.]

I don't think they usually would be, although it's not impossible- some people will put magic into an object, like I do with my food, so that it has magical effects when you use it. Like, say, a glove that makes someone a little bit stronger while they're wearing it.

[*You equipped the bandage.]

So making a band-aid with green magic in it wouldn't be out of the question. But I think most of them are just to stick to things and stop them bleeding.