pattern needed

[kismet09]

I'm going to have 8 or so hours on planes. I need mindless knitting. Here are the contenders:

Wisp, in sock yarn.
Storm cloud shawlette
Razor Lace Scarf
Scrunchable scarf

Thoughts? Other suggestions? I wouldn't mind starting another Pi Shawl, but I don't think I have enough yarn to support it.