Turn your dumb Scroll Lock to a Network Indicator.

As we know most of the keyboard Num Lock and Scroll Lock are used once in a blue moon, so why not use the LED's of num and scroll lock as Network Indicators as Incoming and Outgoing Packets.
There is a cool Tool called Network-Lights. Download from the link below:

Network-Lights

Just extract and run the utility and it will adjust itself in the System Tray.

If you want to change the Settings then you can all do it in Settings.

I will certainly not recommend this to the laptop users as the Num lock is mostly embedded with the letters, so it becomes difficult to type but you can give it a try once.