"We Heart It" is my favorite new "web toy", a bookmarking site for images (and video)
Its neat little bookmarklet (for Firefox) allows you to capture images embedded in a web page. Your images then appear on your own profile page for you to look at when ever the mood takes you. You can of course peruse the homepage to see what other users are bookmarking and there's an option to hide the more risque images if your at work or a prude. Great for art and design types looking for inspiration or those that just like to while away the time starring at interesting imagery.