Zhen Xian Bao

Zhen Xian Bao or Chinese thread book, Visually stunning complex mathematics folding paper to become interlocking compartments used as storage, they originated in China, made to carry sewing supplies, Zhen Xian Bao translates to 'Needle thread pockets'. https://twitter.com/gunsnrosesgirl3/status/1632390292727898114