Adam Erstelle

This plugin allows a wordpress administrator to schedule a different theme to display on the website for holidays or special events for all visitors.
The theme will be overridden on the live site for all people who visit the site. Great for setting a Christmas theme!
If you just want to have a css file added instead of a whole theme, check out the wp-scheduled-styles plugin.

WP Scheduled Themes

Schedule a theme to display on the live site for holidays or special events. (Available from Appearance - Scheduled Themes)

kizinko

Change your logo on a schedule by saving different versions for holidays and special events. Set the dates and this plugin will replace your regular logo with your special holiday or event logo on the scheduled dates you select.
<h3>Plugin Features</h3>
<ul>
<li>Set up multiple logos on different schedules in the plugin settings.</li>
<li>Automatically identifies where the logo loads on your site and replaces it for almost all themes.</li>
<li>You can manually set the div surrounding your logo if our plugin doesn’t identify the right one initially (use the Logo Container ID field).</li>
<li>Enable the Repeat Yearly option for recurring events like holidays.</li>
<li>Set the start and end dates/times for each of your logo variations.</li>
</ul>
This plugin was developed by <a href="https://allmywebneeds.com/" rel="nofollow ugc">All My Web Needs</a> to make it easier to impress your website visitors with customized logos for every special occassion. If you need help designing logos for each holiday or event, feel free to visit <a href="https://allmywebneeds.com/contact" rel="nofollow ugc">allmywebneeds.com</a> to request logo and/or web design services.

Logo Scheduler – Great for holidays, events, and more

Change your logo on a schedule by saving different versions for holidays and special events. Set the dates and this plugin will switch them out.

WP Scheduled Themes vs Logo Scheduler – Great for holidays, events, and more