Yeah, the vast majority of his plugins are very easy to use. There are usually only a few controls, and I don't see how a GUI would change much with how simple most of them are. My favorites are the ones that do distortion/saturation like Inflamer, MultiBandDistortion, Bass Drive, NCSeventeen, Loud, Huge, Density, Mackity, Distortion, Focus, Creature, PurestDrive, and Edge. Reverb stuff like Galactic, PocketVerbs, and Nonlinear Space. A bunch of the weirder ones like CloudCoat and Distance2.
If anything I like so many of them because of how weird they can get. Considering they're all free, just play around with some. I'm sure you'll find at least one of them to be fun.