Your imagination needs a place to go. It needs space.
If you walk around in the same room long enough and talk to the same people, your ideas begin to homogenize.
The air gets stale.
You get tired.
Space is a necessary ingredient of innovation.
The interesting thing about space is that there is no edge. It embodies everything within it. And you can always make more.
The moment of creation just makes more space.
Go. Take a walk.
Clear your mind and enjoy the open space.