Button Art: The Great Wave
Digital artist WBK has a large collection of mosaic images displayed at deviantArt. Some of his work is composed with hundreds of sewing buttons, crochet squares, keyboard keys, and more. Although it does take time to arrange and photomontage each image, I would have preferred his artwork to be handcrafted with real objects.
Images © WBK Link via Designboom and Dude Craft