Various websites that offer resources (graphics, backgrounds, pixels, etc.). + Graphics

• cutecoregifs.com
• dokuji-graphics.livejournal.com
• mortgraphics.livejournal.com
• neskaya.net

+ Backgrounds

• colourlovers.com
• dinpattern.com
• fivepointsapart.blogspot.com
• subtlepatterns.com
• vintagebackgrounds.tumblr.com

+ Colour pallete generator

• http://www.degraeve.com/color-palette/
• colourlovers.com

+ Pixels

• http://cin-harurun.deviantart.com/
• brennahaspixels.tumblr.com
• http://chu.itigo.jp/main.html
• http://infinite-pixels.tumblr.com/
• http://pixelpeach.livejournal.com/

to be updated...