4) Fender Blender.
An iconic pedal which benefitted from a reissue not too long ago. The Fender Blender is flexible while also retaining a unique character at varying levels of fuzz, from oppressive levels of doom fuzz overdrive, to bluesy psych and 60s lead tones.
True beauty in tone, and not a bad looking pedal either. The sustain and blend knobs are your friend on this pedal, they're the key to overdriving and bringing in harmonics to squeal and wail your way to fuzz success.
This can be one extreme pedal, and if you look in the right places you can find working originals for reasonable prices. Or you can just suck it up and buy a reissue.
Songs which feature the Blender: