Making a homemade sail boat is a simple craft to complete with children that not only creates a toy to be played with, but serves as an enjoyable craft for the child while you and he are working on it. A milk carton sail boat uses half of an empty carton as the hull of the boat, with a mast system built using plastic drinking straws and saran wrap. While the construction of the boat can be completed by a child, an adult should always help to cut the carton in half.
Draw a line on a 2L milk carton in marker using the ruler, dividing it in half vertically.
Cut along the line using a crafting knife to create two boat hulls.
Tape the middle of one straw 1 inch from one end of a second straw, perpendicular to the second straw, then tape the middle of the third straw to the second straw 3 inches from the other end, again perpendicular to the second straw. Use a figure-eight wrap with tape to firmly secure the straws. The second straw is the mast, while the other two straws will support the sail.
Tape a piece of cling film to both support straws, then trim any excess wrap with scissors.
Tape the bottom of the mast to the centre of the hull of the boat.
Punch a hole in each corner of the milk carton hull, 1 inch below the top of the hull.
Tie a piece of fishing line to one punched hole, then tie the other end of the line to the top of the mast and cut off any excess.
Repeat for the remaining three holes.