Jaime Salm and Roger Allen have designed a system of easily constructed, snazzy looking, portable cardboard walls. Make entire new rooms or just section off portions of existing ones. The only limit to what you can do is the depth of your wallet.
Made of recycled, double-walled cardboard, and available in six organic colors, the adaptive Nomad Architectural System can be assembled (and re-assembled) into freestanding screens, temporary partitions, rooms, or display elements without hardware, tools, or damage to existing structures and surfaces. By translating the basic tools of architecture into simple, intuitively designed modules, Nomad is easily arranged into arboreally evocative configurations that are open and airy, or enclosed and private.
[ From Better Living Through Design ]