I'm starting this new project of impossible design. The idea is to design things that are "impossible." It is conceptual poetry for the brain. I've only thought of two so far but I invite collaboration, retaining only a veto power.
My idea comes a bit from a David Antin piece in which he talked about an art machine. His examples was a jukebox. You put in a coin, pushed some buttons, and an art work emerged (well at least the playback of the song.)
[Knowing me I will veto everyone's ideas. Sorry in advance.]