FABO BOOki is a packaging design system for STEAM modular courses. The name BOOki stands for book kit, which combines open book reading experience with hands-on project kit. By opening the folding package of BOOKi, each part displays on a long flat roll in assembly order with a hand-drawn project guide as a reference. By the way, the risk of part missing is reduced. It also improves the class's efficiency. The modular packaging system allows changing parts combination quickly according to different course requirements. The package uses recyclable material to strengthening youth's awareness of environmental protection and sustainability.