Recent advancements in digital fabrication technologies have enabled not only the shaping of physical forms but also the design of material qualities, including tactile sensations and interactive functions. This chapter explores novel approaches to designing Shitsukan through digital fabrication from three perspectives: (1) controlling haptic feedback via internal structural design, (2) developing fully flexible deformation sensors using porous and conductive materials, and (3) realizing dynamic visual and tactile transformations through methods such as 4D printing and refractive index modulation. By treating material texture as a programmable and dynamic design element of real-world Shitsukan, this work points toward new directions for embodied interaction and material-centered interface design.