Saturation -what do you use ?

[ere2learn]

Satin,VSM-4 & whatever flavor of the month is, topos this month

[djanthonyw]

Here's another example.

Before, After

[Havok]

apShaper is another really clean saturation plugin if you're wanting to avoid aliasing

[Ah_Dziz]

A waveshaper. Maybe a band splitter to dial in where you want your distortion. I use the melda one so I can dynamically change the transfer function.