Practice course fabricating a metallic balancing toy-"Yajirobe" was created and implemented for 1st and 2nd grade students in mechanical engineering course. This course is harmonized with a lecture on materials processing for undergraduate students. The students fabricated the toy realizing their own design concept starting from a piece of metal sheet within 4 hours. The practice is categorized as introductory education. Students learn basic metal processing such as cutting and plastic deformation are learned through hand work. In addition, we expect that student's creativity and sensitivity that are necessary for the engineers are stimulated. Although the practice is not compulsory nor of any credit, 85% of the students took the course, and most of them were satisfied at the results.