Capitalizing on the old stereotype that kids would rather play with the box an expensive toy came in, these Tube Toys ship in cardboard tubes that also become the vehicles' bodies, leaving just an outer paper sleeve to recycle.
Designed by Oscar Diaz, they'll soon be available for about $16 each and will come in four different versions including a tractor, a car, a locomotive, and a firetruck. There's some assembly required, of course, and all the parts included in each kit were either recycled or are recyclable. So when your kid inevitably outgrows it, you won't feel so bad about getting rid of them. [Dezeen via Notcot]