Customisation
Both Windows and MS Office (Word, Excel, etc) have immense scope for customisation. This means that the right customisation for you can significantly enhance efficient work flow and make work much more enjoyable. Why not take better advantage of the power that's available to you and arrange for your system to be customised to your own work.
For instance, if you are using MS Office 2007, how would you like your own custom tab added to the Ribbon with your choice of buttons?