Although there has been many foldable mouse, you still can’t take it like a piece of paper. This concept design might be a good alternative.

All the electronic components are all fixed on a single flexible board, and the body is actually a inflatable soft plastic. You could blow it up just like a balloon, and deflate it while not using.

Designer: Bongkun Shin, Heungkyo Seo, Jiwoong Hwang & Wooteik Lim