★★★★★
CamelCrusher is a free ‘colouring’ multi-effect plugin. It offers two characteristically different distortion sounds which can be blended together to create a wide variety of tones and textures. Great for guitars, drums and plenty more.
There’s also a warm, smooth analogue-style low-pass filter with buckets of resonance. Assign a MIDI controller and start tweaking!
It also has an incredibly simple compressor tool, that is perfect for “phattening” up your sounds.