What should I change the icon to?

[furst]

The little lightbult icon can be changed to pretty much anything. What should I change it to? It's gotta be something pretty simple because it'll be sized down to 16x16 pixels. If you've got a pic you can see it it'll work at here. (http://safeurl.de/?http://www.chami.com/html-kit/services/favicon/)

[Revenant]

I'm so confused...

[furst]

This little lightbulb: http://img500.imageshack.us/img500/5868/200601131509223ve.jpg

[Talleyrand]

king koopa

[Morbid the Unknown]

http://i.grab.com/media/photos/small/00025/10/08/360810.jpg

[PU$$YCONTIN]

boober from fragel rock