Materials/tools: one cardboard box, one pair of scissors, one sticky paper.
1, first find two cardboard boxes, a hard one and a soft one.
2. Measure the length with a ruler and then draw a line with a pencil.
3, cut along the lines with scissors, be sure to slow down and cut into two rectangular pieces of paper.
4, so put in the box.
5, then put the box with many square pieces of paper for separation.
6, use transparent wide tape to slowly paste the inside lattice can be.