Ideas to keep a teenager occupied on a flight?

It's not that long of a flight. PIT>FORT WORTH>SNA(Santa Ana) So, not bad. I actually want some art ideas of what I can do. What can I draw? What else can I bring? I like physically writing (like, actually writing, not books,just the physical act of writing.) What could I write, lists of stuff I can do in LA? Etc? What else Can I do lol ALL IDEAS ARE APPRECIATED! Thanks!