I apologize if this is off topic, so I won’t be offended if you ask me to remove it.
I recently followed the guide this article from Brett Terpstra on how to turn your Caps Lock into a “Hyper Key”. When you press your caps lock it acts as the escape button and when you hold it, it acts as holding down all 4 modifier keys.
Personally, I loved doing this because it feels like I have a whole new keyboard with which to make hotkey macros!