http://not-salad.net/scribblet/

http://www.tuaw.com/2008/07/03/scribblet-menubar-scratchpad/

I often find myself in need of a the digital equivalent of a scratch pad: just an open text-field to jot down a phone number, save some text for a blog comment, etc. These are not really things I want to save, so I don't want to open a word processor or even use the snippet manager of my choice (Yojimbo). So Scribblet appeals to me in its focus on one basic task. (I've never been a fan of Stickies.)

It's a menubar application that does one simple thing: pop up a small notepad; that's it. It doesn't allow for multiple notes or snippet management. It's simply a scratch pad that pops up with a simple click on the menubar or by hitting a user-definable hotkey. Despite, or rather because of, its simplicity I find it quite handy and it has earned a spot on my menubar.