If you mean is there any existing feature to do that, then no, I don't think so. If you mean could it be done, yes, but you'd have to create a widget or forum block. I suppose it wouldn't be hard to find the code from the navbar and put it in a widget, but the page would have to reload when you logged in.
I have tried adding the code to a sidebar widget, but it didn't display anything at all. Maybe I didn't add the correct code, or made some mistakes.. /shrug
This is the kind of question that often doesn't get an answer because there isn't anyone (or not many, anyway) who knows every addon there is. So if after a while no one says "yes, here's one", then the answer's probably no. I tried searching a little when you first posted this and didn't find anything. Are you talking about widgets or forum blocks?