A cool video has emerged of nine-year-old Mikalah inventing a machine to help her little brother Samuel to stop sucking his thumb. <br /><br />In the footage, shot in New South Wales, Australia, Mikalah explains with a song how she created a helmet with a leg that kicks Samuel's hand when he starts sucking his thumb.<br /><br />Mikalah was able to create the helmet with the help of her father Jacob Strickling from the Make Science Fun YouTube channel.
