Lavender is a reflective tower based on Blond and extending Blond with reified evaluators.
Play in your browser at io.livecode.ch!
The source code for Blond is also readily available, and the two implementations can be diffed with
git diff --no-index $BLOND/blond.scm lavender.scm
assuming $BLOND has the path to the blond repository.
A smaller metacircular reflective tower inspired by Blond can be found in this lecture: https://github.com/namin/metaprogramming/tree/master/lectures/1-lisp