Where can I find Taskbar monitors?

[helios16v]

I found a program called iStat Menus that allows me to quickly read my CPU/GPU/RAM etc at a glance as needed but I can't seem to find anytihng like this that allows me to monitor Keyboard/Mouse battery levels in the taskbar like iStat Menus.

Is there a program like that out there that anyone knows of?

 

[Reaktor5]

If you enable the Bluetooth menu bar in System Preferences you can see the battery level for each peripheral.