This tutorial shows how to make step by step cardboard corner shelf / rack / Organizer.
Cut an right angled isosceles triangle of cardboard of sides 13 inch and hypotenuse 18 inch (take 9 such triangles) Now, cut 18 stripe of cardboard of size (13 inch * 2 inch) Next,cut 9 stripe of cardboard of size (19 inch * 2 inch ) Now, take 3 triangles and glue them one over other to make one tough triangle.