What about Warlock playstyles?

I'll be playing a Celestial Warlock soon. Never played warlock before and I'm feeling a bit overwhelmed with the possibilities of builds. I don't care much for the strongest build path but builds focused in a gimmick are usually fun. Do you guys have playstyles ideas to focus my build?

Right now I have:

- Eldrish Blast (for free map control and damage)