We all know the domains co.cc and cz.cc are out there but there are a bunch more you could use!
-gTLD (Generic Top Level Domains)
.FREE Domain (http://dotfree.com/)
.SITE Domain (http://dotsite.org/)
.WINE Domain(http://english.dotvinum.org/)
-Subdomain
.CO.TV (http://co.tv)
.UNI.CC...