Whether it's your office or your home office, nice speakers plugged into your iMac or computer of choice can make a huge difference. I really love the  Nocs NS2 Air Monitors, which feature built in AirPlay technology that allow you to stream audio wirelessly from your computer or iDevice. On top of being convenient, going wireless is way better looking than having unsightly audio cables running everywhere. The Swedish designers at Nocs did an amazing job with these.