OK, you’ve already seen all the icon collections on the Internet. Nothing can surprise you anymore. Stop! Icons Etc is really something else. You will find hundreds of high-resolution quality icons all of them being free and of the highest quality.
I just took one part of the simplest category: Rain drops.
Rain drops (on Icons Etc.)
I’m sure that you will find whatever you need for your web site, for your Windows desktop or any other icon-based application.