Myself and my other Jira Admins have been contemplating what else we might do with our Default Dashboard and would love to see what others are doing.
At the moment, we're using it as a dashboard displaying a viewer's most pertinent information. We built a series of default filters based on the 'currentUser()' value so any logged-in user can see their own information when they view it.
Most of the filters are native and based on easy JQL, but we did use Old Street Custom Charts for the buttons up the top-right hand side.


We've been promoting it to our new users for some time - a key reason for this is we started having users building their own personal dashboard (that most users don't end up using, and that we ended up cleaning out later). It's even a suggestion in our 'New User' documentation for them to set it as their default landing page.
So, does anyone have any cool, inventive ways to reuse this area? All suggestions welcome, please feel free to brag and show-off 
EDITED: Post edited as I assumed from conversations around Atlassian's new navigation coming to you in 2025 EAP indicated that the "Your Work" page will be revamped. Atlassian have not confirmed anything and my assumptions are only wishful speculation