IconSettings is an interesting hack that lets you set up one-touch buttons on your iOS device to fix certain settings (like turning Bluetooth on or off, or changing brightness levels) but without going through a jailbreak process. All it is is basically a series of links that you can save out to your iOS homepage as app shortcuts, which then will talk back to your device when loaded up, sending you to the appropriate screen with just a touch.
Pretty smart. Of course, you'll need to be connected to the Internet when you use these things, since it's just a link on a webpage, so iPads without 3G will probably be out of luck. But it's
