The web has forever solved the problem of "There's nothing to do!" There is always something fun to do on the web that nevertheless wastes time and productivity. The following list gives you a few ideas for things to do when you don't feel like doing anything more useful.
The websites listed here have been screened for anything particularly rude or offensive and are likely to be reasonably office-safe, but you should always keep in mind that things on the web change and tastes are variable. If you find something that offends you-and there's a lot to be offended by on the webgo to another website and don't return to the one that offended you. And, if any of these links don't work by the time you try them, try searching Google for the name or a description to see if they've moved or if you can find something similar elsewhere.