What better way to spend your Friday than on Rafaël Rozendaal’s latest creation, Fill This Up. Rafaël is one of the very few people that uses the World Wide Web productively, and he spends his time making websites for us proles to click around open-mouthed like those pigs those scientists convinced to play basic computer games. His latest venture sees him turn the boring browser into a canvas upon which we can drag our cursor around to make pastel shapes unfold like origami in quick succession. Drag to fill the page, click to reverse it back to white. Just like a lot of Rafaël’s work, this is simple, alluring and strangely brilliant.