Vanilla for Mac is a small utility, which enables you to hide your unused or unwanted menu bar icons. Basic functionality is free, but you can unlock a Pro version, which includes the ability to automatically launch the app upon login, completely remove icons from the menu bar, and automatic icon hiding after 5 seconds.
As you can see above, all the icons to the left of the dot (between the coffee mug and Bluetooth icon) are the ones, which I have chosen to keep hidden. After pressing the little arrow on the right, the icons become hidden. They can be unfurled again by pressing the small chevron (next to the coffee mug icon).