use strict;
use warnings;
use CPAN;
use Time::Piece;
use LWP::Simple;
use Data::Dumper;
use HTML::TokeParser::Simple;
use Lingua::EN::Numbers::Ordinate;

use constant YEAR => 2003;

my $time = localtime;
unless ($time->year == YEAR && $time->mon == 12 && $time->mday < 25) {
   die "today does not have module\n";
}

my $day  = ordinate($time->mday);
my $html = get("http://perladvent.org/@{[YEAR]}/$day");
my $p    = HTML::TokeParser::Simple->new(\$html);

while (my $t = $p->get_token) {
   if ($t->is_start_tag('div')) {
      my $attr = $t->return_attr;
      if (defined $attr->{class} && $attr->{class} eq 'moduletitle') {
         $t = $p->get_token;
         CPAN::Shell->install($t->as_is);
      }
   }
}
[download]

UPDATE:
Podmaster++ >:)

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)