If you don’t know how to spend your Sunday, how about checking out your PC and see if it needs a cleaning? If you’re on a laptop there’s probably not much to do, but if you’re not, you should be aware that sometimes an interior cleaning of your computer would be in order.
Otherwise it might as well end up looking like this:
For more (and worse) pictures like the one above, click further to The Register: Dirty, dirty PCs: The X-rated picture guide
Thanks to Martin for sending this one in!