Kawa was my first Lisp / Scheme and I dug it quite a bit. I wrote some wrappers for Processing called ProKawa which probably doesn't work with the latest Processing releases, but it was all very fun. Quil on Clojure is pretty good, and in general I'd say I've gotten more milage out of Clojure for sure.

Right, I'd forgotten about that! I used it as an extension language for a Java program once. I didn't think it even had a compiler, but that was 20 years ago, and it appears to have one now.