HLogoZ Lite is a script that automatically changes a logo or other image for specific holidays or other dates. There is also a version HLogoZ available as a plugin for WordPress: HLogoZ-WP. It allows you to specify your own custom dates or holidays on which the logo should be changed. It has three modes: image, Flash, and text. All modes can be used together.
DB Schema Management is a class that can be used to: extract a database schema into a PHP script that defines the schema in an array; apply the extracted script to recreate the database schema; allow the editing of the extracted script to implement changes to the schema; and allow users of the application to create changes to the schema that are separate to the extracted script. It has support for pre- and post-processing scripts. It can require a minimum schema version to apply the update.