Isis Shiffer created the EcoHelmet, a cheap cycling helmet made of paper. It’s made of recycled waterproof paper and its unique honeycomb pattern softens the impact of an accident. The purpose of the helmet is to give people who use bike-sharing programs an easy option for safety. 90% of people who use bike-sharing programs do not wear a helmet at all, and they report that they feel unsafe while on the road. This cheap, effective, and easy to store helmet solves that problem!
http://www.thememo.com/2016/11/17/paper-helmet-paper-cycle-helmet-dyson-award-cycling-news/