Collapsing

I found a collapsible, accordian ruler at work a few days ago. The brand is FOLDRite, and basically, with each inch, there is a hinge. When folded it up, it looks like a small stack of 12 tiles. But when expanded, it looks like a completely legit ruler! Amazing!!
I started to think - this is a market I need to get into. Making more space for us hoarding humans with objects that normally don't collapse. How about a collapsing chair!? It's brilliant, the space you would save. You could put it on your lawn, maybe take it camping; i don't know, i'm just brainstorming...