Is simple: Just use your own mind and your imagination if you want a good nickname for you. This depend mostly on you what name you like and if it does fit with your personality, etc.
Asking here that I want a good nickname it doesn't really make sense in some parts, this is only up to you what good nickname should I choose or mind some.
Most suggestions here are troll. Gotta contribute
In all seriousness, YOU think of a name which you'll like. It'll feel a lot better to have your own nickname than use someone else's.
In all seriousness, you won't get any serious suggestions from us. You don't have to ask us to do everything for you, we don't know exactly what you want.