What should I do with school uniforms after graduation?

It can be kept as a souvenir to commemorate the lost youth. It can also be worn as pajamas, and it can also be donated to areas in need for charity. If it were me, I would keep it as a souvenir. Commemorate the time of every stage and every school. Maybe your school uniform will be out of print, after all, it changes every day, and now the city has unified school uniforms and so on. My school uniforms in junior high school and senior high school have become out of print.