Why not try crafting those and posting the attempts? Others will happy point out mistakes. You can annotate the listing with pointers to the synopses or discussions of the language features.
Some of those are squarely "library" and that's gotten much less attention than the core language.
Some of those lead to very interesting discussions. E.g. "environment variables" are the default values of context variables, which have taken the place of global variables.
"Perl 6 can do some amazing things" Indeed. here is one of my efforts along the lines of what I'm suggesting (which also shows reading of standard input, according to the latest decree).
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