SmartPhinger recently released SmartMonitor Homescreen Plug-in for Windows Mobile Smartphone which is a plug-in to display different parameters of your phone such as battery life, temperature, storage space and available memory. You can also add icons representing any of these things as you see fit. The plug-in is extremely configurable in that it allows you to place as many or as few bits on information on the screen, wherever you want with just a minor tweak of the XML file.
It is available for Smartphone 2002 and 2003:
I have to admit that I'm completely addicted to that kind of handy plug-ins and still wonder why the developments here are so slow. While there are hundreds of great Today screen plug-ins for Pocket PCs, so far we have seen just a couple of dozen Home screen plug-ins for the Smartphone.
SmartMonitor Home Screen plug-in is available for free from the developer website.
Cheers ~ Arne