Inventions: the weird and the wonderful

Hartmut Schmuecker from Germany using his forehead safety belt, designed to prevent neck injuries in car crashes Photograph: Salvatore Di Nolfi/EPA

Roland and Raymond de la Celle, both French, have invented an orthopaedic aid for dogs with spinal injuries or disabilities
Photograph: Fabrice Coffrini/AFP/Getty Images

Jean-Paul Magro, from France, has invented a hollowed-out bread for sandwiches
Photograph: Fabrice Coffrini/AFP/Getty Images

Alexis Babusiaux of Belgium with his one-handed bottle opener
Photograph: Fabrice Coffrini/AFP/Getty Images

Ivor Kovic, from Croatia, has invented a chest-compression device to help in CPR. And yes, that does appear to be an iPod Touch driving it... Photograph: Salvatore Di Nolfi/EPA

British man Lee Jenkins with his SoccerTrolley, a box for transporting football training equipment that can fit six balls, marker cones, first aid kit, notepad, pens, ball pump, whistle and training bibs, with a magnetic dry-wipe tactics board on top
Photograph: Fabrice Coffrini/AFP/Getty Images

Jose Manuel Martin Ruiz, from Spain, has invented a lift-up bedframe to ease the process of making the bed Photograph: Salvatore Di Nolfi/EPA

Janick Simeray with his invention, which levitates objects using a hidden plinth that generates a magnetic field
Photograph: Fabrice Coffrini/AFP/Getty Images

Francisco Speich from Switzerland with SSBOT, his water-bottle system for a coffee machine
Photograph: Salvatore Di Nolfi/EPA

Spain's Luis Burgos Agudo with his universal opening device for food and powder boxes
Photograph: Fabrice Coffrini/AFP/Getty Images

Ricardo Matias from Switzerland with his chainsaw sharpener Photograph: Salvatore Di Nolfi/EPA