Referring to a friends like: "the friend of mine" is a common way.

And what about to referring to something else, like car, fork or plant: the something of mine. Are there any restrictions on subject?

Referring to a friend like: "the friend of mine" is a common way.

But what about referring to something else, like car, fork or plant i.e. the something of mine? Is there any restriction of using subjects only?