The dog days of summer are here and we are all looking for activities to keep the kids busy. Well, we love this. Photobrix is a LEGO wall art instruction generator. For best results, upload a colourful image with a lot of contrast. I uploaded an image of the sunflowers in my backyard and got this. The site even provides a shopping list and building instructions on how to recreate the mosaic. Even if you don't actually build it, a Lego portrait makes a cool Facebook avatar.