A sample plugin for WordPress short codes that can be used in your personal installation of WordPress.

mike-wills-shortcodes.php

<?php
/*
 Plugin Name: Mike Wills' Shortcodes
 Plugin URI: http://mikewills.me/projects
 Description: A bunch of shortcodes for the network of Mike Wills' WordPress sites.
 Version: 0.1
 Author: Mike Wills
 Author URI: http://mikewills.me
 License: GPL2
 */

/*  Copyright 2010  Mike Wills  (email : mike@mikewills.me)

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2, as
published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/