Once upon a time in the 90's, I had a program called Neko on my computer. It was a little cat which wandered around my desktop, chasing the mouse, taking naps, and generally being cute. It seems like a billion years ago (technologically speaking), but cuteness is apparently timeless, and now there are Desktop Ponies - a collection of ponies that wander around the desktop, generally being cute. Each pony seems to do different things - Rainbow Dash flies and does a sonic rainboom for example. Download them here.