If you're bored on the Internet and photoshop just isn't doing it for you anymore, then you're definitely going to want to check out Silk; the interactive, generative light drawing tool where you can spiral, mirror and fold your line to create any kind of pattern you want. You can use the colour palette on the side to edit your silk thread, and slide the slider to choose how many times your silk repeats.
Of course I'm just a novice, so I'm still trying to get the hang of spirals, but there are some creative genius' out there that weave silk like no other. With creations such as the joker, a cat and Charizard, there really is no limit to what you can do with this app. Absolutely amazing!