The Gnomeratron Mini is an MXR sized one-trick-pony version of the Gnomeratron VTF. They're available in several different configurations, including customs. They have two volume controls, either a gain or tone control, a mini toggle, and a trimmer. All the knobs on the VTF are usable as trimmers on the inside of the pedal to "tune" it, but the switches are hard-wired.
Some options are: Standard, Standard w/ octave, Doom, Synth, Brass, V for..., and custom.