for my $id (sort by_name_and_age keys %hash) {
    print "$hash{$id}{'item'} - $hash{$id}{'name'}\n";
}

sub by_name_and_age {
    # Sort by reversed ASCII order...
    $hash{$b}{'name'} cmp $hash{$a}{'name'}
    or
    # ... or by ascending age value.
    $hash{$a}{'age'} <=> $hash{$b}{'age'};
}