Is not about doing something never been done before. Feels more like doing something that can be sold, because else there could be legal problems, competition, captive markets and so on. That is about the current state of the world, not yourself.

You can't know everything that has been done in the past, or is being done and finished before you ended. But as far as you are not just cloning something that you already seen working, you can explore what you are capable of doing, for the sake of it, for the experience of doing it and make it work, for the things that you think are useful or nice or whatever in what you did.

And if all that effort don't end in something that can be sold, you still grow through the process. You are not ensured commercial success even if you try something truly new. But maybe that is not always a bad thing.