jrtom

http://blag.xkcd.com/2007/11/19/growing-up/

I kind of doubt that we're ever going to try this, for a variety of reasons...but I gotta say that, especially now that I've got three kids (but even without that) this would have to be one of the coolest options for "furniture" that I've seen. :) (Of course, most furniture you don't have to reassemble after your kids have been using it for 10 minutes. It does have its downsides.)

via BoingBoing: Sprout a Couch

"How much oxygen did your furniture produce today?"

This sounds right up your alley, fdmts. ;>