My partner spotted one of these at the jQuery conference in Boston on Sunday. It's a cheap ($249.99 on Newegg.com) and adequately powered (2GB) tiny (2 lbs, 7") laptop. It's the perfect little buddy to take with you to conferences, off-site meetings or other events.
It's also got a solid-state disk, which means you can knock it around relatively worry-free, since nothing is going to come loose inside. It's also got a built-in WiFi that that the manufactures claim "automatically detects and connects to the Internet at any hotspot."
It runs Linux rather than Windows, which keeps it fast and cheap. But the downside is that you won't have a copy of your Outlook for mail or other Windows programs you're addicted to. Some report that it doesn't handle video well, although the manufacturers tout sharing videos on YouTube and Flickr. It also comes pre-loaded with Skype, one of my favorite programs for the nonprofit.