Where do the most eco-conscious children lay down to bed? In a Cardboard Album customizable cot ($300), of course. For families tight on space or looking for an equally pricey alternative to a toddler bed or crib, it's quite the conversation piece. Delivered in a flat box complete with materials to assemble, a safe mattress and wheels for mobility, the contraption is part DIY project and part mod design. Budding lil decorators can personalize the furniture with eco-friendly markers or paint.