It's almost Christmas...
This (free) extension adds falling snow to your pages.
More information:
http://www.wysiwygwebbuilder.com/snowfall.html
You can download the new extension via the Extension Manager: Menu->Tools->Extension Manager->Online Gallery->Miscellaneous
Please read the included (PDF) document for help.
Note
This is an extension from my private collection. It is shared "AS IS".
If you find my (free) extensions useful and would like me to continue to make improvements or create new extensions, then please consider making a PayPal donation:
http://www.wysiwygwebbuilder.com/donate.html