Well, when i get bored of the games i have available, there's no activity on the relevant sections of internet AND i don't feel like staring blankly at the nearest wall (oh and i don't have anything important to do), i start doodling things. It's one of the few activities that i can legitimately spend hours upon without forcing it. Another activity i more or less enjoy is to get lost on TVTropes/Wikipedia/some Wikia for something, which can take up a surprising amount of time.