Looking for an I'mHere/NotHere Toggle Plugin

Hi, please forgive me if the answer to this is right in front of me. I’ve spent much of the last two days searching Google and WordPress Plugins and perhaps I just can’t figure out how to word what I want.

I want a widget that I can quickly manually toggle between an image (or even text) with a link that basically says “I’m here, call me” and another one saying “I’m not here, leave a message.”

I know someone who achieves the same effect by dragging a different text widget to the sidebar every time her status changes. I was hoping for something just a little more efficient–one click. And I will most likely use the Widgets on Pages plugin to place it in a page.

Recommendations?

Thanks ??