What to write? "Leaving my mark"

1. A piece of acid-free paper
2. Journal stored in a attic
3. In stone
4. Blog
5. In water
6. Grafetti
7. Magazine and/or Newspaper
8. Speak outloud

To answer these, think, if I had to write (say) only one phrase (or one sentence) in these places/in these mediums/ways, what would it be.