Homemade oxygen tank, goggles and airtube for Scuba Diver costume Oxygen Tank- is 2 -One liter bottles, Black spray paint,Yellow utility tape, Black shoe laces, gun Make Mouth Device What You Need Black cord covers Pacifier Hot glue gun 1. Cover one end of the cord with yellow tape. 2. Glue pacifier to the other end of the cord cover. Let dry overnight.