Personal Stories, Advice, and Support
I always have my iPod, the book I´m reading at the moment, notebook and a pencil. So, when I have to wait I listen to music and read/write.
I carry a pencil and a notebook, and when I have to wait for a long time, I just take them out and draw anything that piques my attention. I also carry my PDA with me, so I can read a book sometimes.