WIND-UP radio inventor Trevor Baylis visited Frieth School as pupils took part in an invention day.
The 76-year-old presented prizes to the winners of a competition in which the children took turns to present their inventions to him and a judging panel made up of school governors.
More than 120 pupils were given two months to come up with an invention designed to solve a common problem.
The best invention idea from each class was presented to the judges. George Bowden, six, was the overall winner with his magnetic device to pick up small nuts and bolts. He won an aeroplane and parachute building kit and a certificate signed by Mr Baylis.
George, from Hambleden, said: “My invention was called a magnetic broom. It picks up anything that’s metal. Hopefully, when I grow up I will be an inventor.”
The other year group winners were Molly Saunders, seven, with a tooth-cleaning gumshield, Aimee Markwell, 10, who created “gripper gloves” for people with arthritis, William Bernard, nine, with his portable hot chocolate machine and Thomas Steele, six, who made a robot which stands in for absent pupils.
William Barton, 10, Phoebe Coombs, five, and Jessie Harper, eight, were the spirit of the day winners, given for showing the most enthusiasm during the project.
Mr Baylis, who has also patented shoes which can charge a mobile phone or radio as you walk in them, said: “When you consider the age of these children I was very impressed. I don’t get up in the morning and say ‘I’m going to invent something’ but if you come up with a good idea you have to make sure it has not been done before and there is a need for it. That’s why we need the subject on the curriculum.”
Headmistress Lindsey Phillips said: “We were honoured to have Mr Baylis in our school. He gave an inspirational talk to the children about his experience and shared some great motivational advice.”