The first thing I did to my EEE was adding a wireless, optical, travel mouse, because I hate the clicker of the trackpad. Then I multiplied the memory with a 4gb SDHC card; and others will follow as prices come down. SDHCs are recognized directly in the SD slot without any kind or reader. Next, I'll just have a bigger USB keyboard lying on the table where I usually speed type(try). The keyboard on the device itself is not so bad, akward at first, but usable in 'outside' situations.
What I like best about it is that I do not have to deal with MicroMou Fenêtre.