Topic: Extensions by Rich Pedley
This extension allows you to change the smiley set on the fly. Just upload extra sets to the imgs/smilies/ directory - each contained within their own sub directory. After the extension is installed you’ll be able to choose which set to use.
If you are using the pun_bbcode extension then you’ll need to check the readme included with this extension to make a small alteration. A similar change may be needed if you are using other smiley pickers as well.