Easily one of the earliest and continually the most visually and tonally interesting brands in the boutique guitar effects pedal world, every one knows ZVEX. My first ever boutique pedal was a reverse Fuzz factory and I still have it and use it often. These pedals will light up the display case and they are easy to sell with numerous price ranges.
In addition, The Z.Vex Artist Roster is a virtual who's who of music.