Skein of yarn
Step 1. If the straw has a bendable neck, cut it off.
Step 2. Begin by stringing a length of yarn through three straws. It is easiest to suck the yarn through one end of the straw. Cut the yarn and tie a knot to form a triangle.
Repeat step 2 twelve times to create twelve triangles.
Step 3. Tie the tops of two triangles together with a small piece of yarn.
Repeat this step 6 times. You should have 6 pairs of two triangles tied together.
Step 4. Now we will form the base of the triangles by adding two more straws to form a pyramid. Tie a piece of yarn, longer than the straw, to the bottom corner of one triangle. Insert the yarn through a straw and tie it to the other triangle.
Repeat on the other two corners of the triangles, forming a square base.
Repeat Step 4 six times. Now you should have six pyramids.
Step 5. Now you will assemble the six pyramids by attaching the corners of all the square bases. Tie two corners of the square base to another square base. Continue tying the square bases together until the inside of the finished product is a cube.
Step 6. Attach a string to the tip of a pyramid for hanging purposes.