I found some handy generators.

http://www.stripegenerator.com/ << create stripes

http://www.web20badges.com/ << create badges

http://www.ajaxload.info/ << loading images

http://www.favicon.cc/ << create favicons

http://www.pixelbutton.com/eng << create pixelbuttons

If you know more please share

Great ones. Here's a couple more:

buttons: http://www.mycoolbutton.com/
buttons: http://www.buttonator.com/
logo: http://web2.0stylr.com/stylr.aspx
logo: http://h-master.net/web2.0/index.php

and finally, website: http://www.web20generator.com/

(ok, - the last one is a joke )