What do you like doing in your spares time? Whatever your hobbies are, they are unlikely to be as exciting as these. Fromfully functioning submarines to tanks and homemade helicopters, here are some of the most inventive vehicles built by some men with slightly too much time in their hands.

Above, 50-year-old farmer Chen Lianxue with his homemade plane on the roof of his house in Qifu village of Pingliang, Gansu province. The plane

took Chen about 28,000 yuan (£2,900)

and over two years time to make, local media reported. Observant readers will

have noticed that Mr Lianxue’s craft

only has one wing.