Is there anymore to the usage of なんか that isn't saying "something", but rather something like, or along the lines of? I know the two are very similar, but using なんか at the end of a sentence seems to be very clear syntactically, while using it to modify a noun seems weird, especially given the か at the end- further kanji isn't generally used, I don't think. So is there more to it? Is there a more formal way of saying it that would make sense syntactically?
It can be used in front of adjectives to convey the sense of "somewhat" (e.g. なんか強い = "somewhat strong"). Is that close to what you're getting at?