I don't have the skills to do it myself but how about a battery indicator that uses the little faces from the Doom game? As his health deterioriates, his face looks worse. That would be a cool battery indicator.
$ root
$ cp /usr/share/icons/hicolor/48x48/hildon/statusarea_ba* /home/user/MyDocs/backupbattery48x48/ $ cp /usr/share/icons/hicolor/scalable/hildon/statusarea_b* /home/user/MyDocs/backupbatteryscalable/
$ cp /home/user/MyDocs/doombatt48x48/* /usr/share/icons/hicolor/48x48/hildon/ $ cp /home/user/MyDocs/doombattscalable/* /usr/share/icons/hicolor/scalable/hildon/ $ reboot