That would be a bit complicated for a 24X24 pixel icon. What about a hard hat?
I like the idea of a pencil ruler combo too.
What about something that looks like a Gantt chart?
If you removed the vertical bar, it would communicate better. The vertical bar makes it look like an Orthodox cross.
Inspired by GitHub's project icon:
I had to push the rectangle 1px closer to the border on the right side to fit the 3 bars.
@phidias51, chart-gant
without the vertical bar is notifications-clear-all
flipped. And the icon @CoDEmanX suggested above is similar Google's graph options
icon flipped.
That graph options icon plus a flipped version would be nice additions IMO.
I find it easier to recognize if it's larger, but with only 1px margin on the right-hand side:
It's what GitHub uses and represents a kanban board. So maybe call it that instead?
I'm closing this issue since it's been resolved for me.
See also #3299
Most helpful comment
Non-rounded works better IMO:
project2.zip