This module brings the Quo.js mobile event library to Drupal. This module doesn't do anything other then allow for other projects to use the library and makes sure that it's installed correctly.
The default core fields do not include a bigint field. This module allows you to have a true BigInt (19) value. That means the number can contain 19 digits.
So it's something of a joke holiday, and a joke module. But the community point is serious. My company will be giving all our employees this day off to work on any issue(s) they like in the Drupal community, something we can afford. Joined together we'll do something.
I've implemented a bare bones module that creates a block with a picture of Dries in it. The block title changes to a special message on Driesday. It encourages the site's users to participate in Driesday.
Profile completion is a module built with the idea similar to "Linked In" profile completion. It provides a block that tracks user's profile completion percentage.