폭팔음출처https://scratch.mit.edu/projects/795245017/ 전화 벨소리 출처https://scratch.mit.edu/projects/868218230/
샌즈 이미지 출처 https://www.google.com/search?sxsrf=AB5stBjRiTV3SCPFYzB_-ZmrVsYtEa7SVQ:1691458208022&q=%EC%83%8C%EC%A6%88&tbm=isch&source=lnms&sa=X&sqi=2&ved=2ahUKEwjXyJDt9MuAAxWKBogKHXmIDAAQ0pQJegQIDBAB&biw=1707&bih=786&dpr=1.13#imgrc=9D1Y4D0VSRbZ3M
