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It would be great to extend the new Activity widget coming in WordPress 3.8 (depending on how extendable is actually is).
We could add a Configure option to this widget and allow additional contexts (made available via WP_Stream_Query) to be displayed.
It looks like the Activity widget is not extendable at all, but could very easily be made so. Looks like a cheap way to get my name on the 3.9 list, if they go for it. I can see a great case for not allowing additions to that widget. Everyone would throw crap in there.
Created issue-13 branch, about 1/3 done. https://github.com/x-team/wp-stream/tree/issue-13
Proposed design for initial dashboard widget.
Proposed design for configurable options. More options should be added later.
@westonruter Good idea, done in f2a6a25
Handle occurrences, finishes #13