First off, let me say I think CPAN Day is a great idea, and I am happy to take part in it!
For CPAN Day, I have contributed App::HTRender, a command line tool to assist development of HTML::Template-based templates. If you are building a website using HTML::Template and your data model is still fluid (or you just want to quickly test different values) you can lay out your data in JSON format and use the ht_render command to feed it to your template without having to change any of your Perl code.
Additionally, Logical Helion has released a new version of Helios, Helios 2.81. This version is largely a bugfix release, but does include a new command for retrieving jobtype information and some improvements to the helios_config_* commands.
Happy CPAN Day everyone!