To me the crown jewl of SICP is the universal scheme interpreter they build in the later chapters. That opens the book to be used in _any_ language. Now we have

To me the crown jewl of SICP is the universal scheme interpreter they build in the later chapters. That opens the book to be used in _any_ language. Now we have an internet there are hobby schemes implemented in every language, so it's fairly easy to find ideas if you are stuck implementing the necessary substrate using the language of your choice (ie. mostly tokenizer, parser and some form of eval/apply).