How can you quickly toggle between the last two tools used in Photoshop?

Pressing the "Shift" key while tapping the keyboard shortcut of the last tool used allows you to quickly toggle between the last two tools. This functionality enhances workflow efficiency, especially for tasks that involve frequently switching between tools, such as when alternating between the Brush tool and the Eraser tool.

The design of this shortcut caters to the needs of users who often work with multiple tools in a sequence, enabling them to maintain a fluid working pace without needing to navigate back to the toolbar physically. Other methods, such as using the tool switcher button or the Edit menu, do not offer the same immediacy or convenience that the keyboard shortcut provides for quick toggling, making the "Shift" key combined with the shortcut the fastest option available.