Many people recycle old aluminum cans so that they are diverted from landfills and reused to make a variety of items. But if you’re a fan of DIY projects, you might consider saving those cans and transforming them into shingles, tiles and siding. Over at Instructables, a self-described stay-at-home dad has published a set of instructions explaining how to transform old cans into useful roofing tiles for a small structure.