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.
Customisation can mean anything from an extra button on your toolbar to a document management system, or perhaps a macro which can print two copies of a letter, one on headed paper.