the more complex the data that you need to share, the more thought you need to provide.

That just is not true. You need to share a hash full of data, t'is easy:

#! perl -slw
use strict;
use bignum;
use threads;
use threads::shared;
use Data::Dump qw[ pp ];

my %results :shared;
async {
    my %comps;
    for my $i ( 1 .. 1e6 ) {
        $comps{ $i } = $i ** $i;
    }
    %results = %comps;
}->detach;

while( sleep 1 ) {
    print "timer event";
    last if %results;
}

pp %results;
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