christopher furniss-roe , 8 , found hanged in his bedroom in south wales .
he had been sent to bed early for breaking younger sister 's beach bucket .
his father tried to save his life , but he died in hospital the following day .
coroner ruled it was a ` tragic accident ' and recorded the cause as hanging .
for confidential support on suicide matters in the uk , call the samaritans on 08457 90 90 90 , visit a local samaritans branch or click here .