Founded by Zach Rotholz, Chairigami produces furniture made entirely out of triple-wall cardboard that is easy to unpack and repack. They are recyclable, lightweight, flat-packed, and easy to assemble. Rotholz used his $5,000 of bar mitzvah money to launch the company, which now sells most of its products online via a free Weebly website. "It was very grassroots. I tested and iterated as I went. A lot of the furniture ideas came from the website. People would come on the web page and give their suggestions," he says. Shelving starts at $65 and the couch is $100. The pieces are available online or in the Chairigami store in Connecticut.