[jerf]

I've implemented things with "Lisp syntax" a couple of times, neither of which had anything whatsoever to do with Lisp. I used to call it the "Lisp non-syntax".

Nowadays I usually bite the bullet and just use JSON or something, but if you want to implement an interpreter starting just from bare minimum string functions pretending you're in 1980 and can't just grab half-a-dozen serialization formats out of your language's package manager (not a bad thing to practice!), Lisp-non-syntax is still a pretty good choice.