There's also a post in the staff forum I think.
Here's some I remember right away:
http://www.eq2interface.com/download...TigerSkin.html
http://www.eq2interface.com/download...nixReborn.html
http://www.eq2interface.com/download...defaultUI.html
And probably these as well:
http://www.eq2interface.com/download...llection1.html
http://www.eq2interface.com/download...llection1.html
There are of course all the ProfitUI Skinpacks that also work for DefaultUI but I prefer to keep them in my category as long as downloads cannot appear in two categories at once.
[also sent as PM, only posting it here so someone can PM Dolby with what's missing]