A slab of stone and a few overturned flowerpots make a table that blends into the garden so well, it almost looks like something you unearthed while turning the soil. The top is a piece of marble, but slate -- or even an old wooden door -- would work just as well: Simply place it on top of four large upside-down terra-cotta flowerpots. Once assembled, the table can be used as a work surface or an outdoor coffee table, more than sturdy enough to rest your feet on.