Since the upgrade to the Editor a few versions ago, one thing I've been consistently asked for is different icons for the different types of light sources. It's actually pretty easy to set this up (and you can even customize it yourself by modifying the ns2/editor_setup.xml file), but at the moment I don't have icons to use.
If anyone would like to have a go at making some clear icons that fit the existing theme, here is the source file for the current icons: http://dl.dropbox.com/u/386361/editor_symbols.svg
. You can open this file with a SVG editor like InkScape
Please post your work here or email me at email@example.com