Fluid creation - recommendations?

Hello,

I need to create a fluid-like object with animation…like an “ink” effect that flows. Does anyone have any recommendations on how to best create it? Mesh with some sort-of displacement? Particles? Skeletal mesh with animation? Create it in another software and then import it as video?

It needs to be lite as it’s for an Oculus Rift experience so any direction or opinions are greatly appreciated!

Thanks,