Buy a few energy bars and stuff them in your carry on
if you bring along a power strip, you can make friends fast at a busy outlet.
It was more cost effective to buy my own Verizon EVDO card (mine's a USB stick). Check with your wireless carrier, and even if the company doesn't spring for it, consider it.
"A useful site for creating metro maps. Use it in creating writing to map out a character's travels, make Monopoly-like games or make classroom posters showing connected words, names, ideas or topics."