Sometimes the simplest tools are the handiest. This one lets you send articles you find online directly to your phone. Set up an account on Instapaper.com, then download the app from the iTunes store onto your iPhone. It took developer Marco Arment more than 100 hours to create this tool, but it will take you just a few seconds to start using it. Whenever you're at your computer and find a story or blog entry you want to read later, just click a button in your Web browser and the story will be waiting on your iPhone the next time you're stuck in line at the store.