Here’s my current attempt to use as little as possible in my menubar:
LittleSnapper normally isn’t running, so that doesn’t count. If I could, I would run DropBox and FastScripts without menubar icons. I’m still not sure I like having a clock visible at all times, but at least analog clocks are classy-lookin’. I’d love to remove the battery icon, but it appears doing so disables the “your battery is tapped” warnings, leading to spontaneous laptop sleeping.