Text Creation
https://cooltext.com/
http://www.flamingtext.com/
https://textcraft.net/
Images
http://www.clker.com/
http://www.free-graphics.com/
http://www.artvex.com/
Photos
http://compfight.com/
http://images.library.yale.edu/walpoleweb/
http://www.freefoto.com/index.jsp
Sounds
http://www.findsounds.com/
http://www.thefreesite.com/Free_Sounds/Free_WAVs/
http://www.thepocket.com/sounds.htm
Music
http://incompetech.com/music/
http://www.royaltyfreemusic.com/
http://free-loops.com/
Animations
http://www.gifanimations.com/
http://bestanimations.com/
http://www.animationlibrary.com/
Videos Search
http://www.teachertube.com/
https://www.youtube.com/education
http://memory.loc.gov/ammem/browse/ListSome.php?format=Motion+Picture
General Multimedia Search Engines
http://search.creativecommons.org/
https://www.google.com/imghp?hl=en&tab=wi
https://commons.wikimedia.org/wiki/Main_Page