Keyboard shortcuts
Keyboard shortcuts can be a great time saver (especially for specific programs, folders, actions) that you do dozens of times a day.
Over a decade ago I put the below file together documenting the most frequently used Windows / Office shortcuts

MS word file great keyboard shortcuts
Now-a-days AutoHotKey to create my own shortcuts (of which I have over 100 which do various activities by a simple click of the key/button.) AutoHotKey has a function for this called Hotkeys which are a great way to launch programs / scripts /folders that you use frequently.
This video walks through how easy it is to set up hotkeys to launch programs, scripts, etc.