Ear plugs and an eye mask. Depending on your tolerance for ambient noise, you might even try ear plugs and noise-canceling headphones, although I find that my ears start to hurt after several solid hours with the headphones on.

I can recommend some sort of neck pillow - got stuck in coach on a 6 a.m. transcon over the summer and it kept my head in a fairly stable, comfortable position that enabled me to grab a few hours' sleep.

I'll also vouch for fitting in with your destination's time - try to go to bed no earlier than 9 p.m. the day of your arrival.

Just thought of another item: Listerine breath strips. If you put a few in your mouth and swish with a tiny amount of water, voila, mouthwash!