a couple of threads have been around about this subject
Inertial Slider
Enabling The Formula Meta Device
Sample & Hold CV signal
Super Formula Device
Kaossilator-like NoteSelect
Meta Modulator Device
The Stepper
LFO - Random Slide
What Is The Formula Device?
Magic/hidden Formula Device Causes Crash On Load
I’ve only had it crash in 2.7, but I haven’t used it that much since.