There are no original ideas anymore. Original ideas are simply undetected plagiarism.
Plagiarism in the most tasteful, humble manner that honors the artists who came before.
Every artist has been inspired by other artists. Every artist has taken ideas from others and made them their own.
Composers were inspired by other composers. You can see the influences in their work.
Rock musicians were inspired by their own heroes.
Writers are obsessive readers. Not only for inspiration, but to look for ideas to steal (perhaps "borrow" sounds a little more ethical?) and make their own.
The world can't handle a completely original idea that's not connected to something they're already familiar with.
But, by looking at creativity like this, there are possibilities all around us.
We can also climb the tree of creativity.
All you have to do is find an artist you love, and learn who inspired him or her. Then, find out who inspired that artist. And then, find out who inspired that artist.
And up the tree you go. Keep going as far as you can.
And when you've discovered all you can discover, you'll get to grow your own branch on that very same tree.