Some contestants traced letters on their palms, while other word whizzes in the Scripps National Spelling Bee searched the ceiling for inspiration on Wednesday as they edged closer to the $40,000 top prize. The youngest-ever competitor, Edith Fuller, who turned 6 on April 22, was among the 259 youths still spelling at midday from a starting field of 291. “It feels really exciting,” Fuller, of Tulsa, Oklahoma, told reporters who asked what it was like to be the youngest speller at the 90th national bee. Wearing a navy blue dress with a black bow in her wavy blond hair, Fuller said she planned to compete again next year “if I don’t win this time.” Her mother said she quizzed her daughter on words up to five times a day but limited each session to 20 minutes. “She does all the work in her mind,” said Annie Fuller, who home-schools her …