I’ve been farting around with ExtraBar since I got it, and I really like the approach. It’s effectively a replacement for your Menu Bar (or more accurately, utilities like Bartender that clean up an overstuffed Menu Bar), but there are a few ways of configuring it to make it, indeed, an extra bar. This is how I’ve set it up; I like having all of my menu bar icons showing when I’m plugged into a larger display.

1. Show Desktop: activates the function-f12 keystroke
2. Fill Screen: sets the currently active window to fill the entire screen, but not the single-window mode a la iPad.
3. Center Window: Centers the currently active window
4. OmniFocus: open Perspective: “U2”
5. OmniFocus
6. Show Safari Sidebar
7. Safari: multiple controls, including showing the sidebar and search tabs
8. Home Focus Toggle
9. Work Focus Toggle
10. Trigger Macro by Name (search Keyboard Maestro macros)
11. Typinator Search
12. Bookmarks (Shiori): activates the Shiori bookmark manager in ExtraBar
13. MailMaven: multiple controls
14. Clear Notifications
15. Control Center (toggle)