Keyboard LEDs -A great, free download that can end caps lock confusion.
Caps lock indicator – audio cue
Learn how to make Windows 10 signal you when you activate caps lock num lock, or scroll lock.
Keyboard Notifier
Do you have a laptop or a desktop without notification lights for Caps, Number and Scroll lock keys? Isn't it infuriating when you go to type something or use the number pad and it doesn't work as you expected because the lock wasn't on?