Mouse Timer

You can start a timer and change sound effects and notifications settings by pressing "Start timer" and "Settings" keys respectively.

You can start a timer and stop it by pressing a key that has the timer name.

By pressing and holding a key that has a timer name you open the context menu using which you can start/stop/edit/delete the timer.

You can add widget of any timer on the desktop. You can start a timer and stop it by pressing a widget.