Blue tooth is slowly becoming more widely used for its hands off convenience. However, most people have a problem with the audio volume the bluetooth provides. Take a look at this instructional video and learn how to hack a bluetooth speakerphone mod for your cellphone. Speakerphones are louder, easier to understand and sport that retro-Charlie's Angel cool geek chic that no in-ear handsfree system can match.
Oh... and if you're working from home these days, be sure to check out Gadget Hacks' Working-From-Home Essentials.