The kite is dead. Long live the Solar Airship, heir apparent to the kite's 30 centuries of dominance of the skies. The Solar Airship might look like an eight metre bin liner, but it's wise not to be fooled. To unleash its might, just fill it with common-or-garden air, and it will amply demonstrate the power of solar energy.

This Airship is different from anything invented by the Montgolfier Brothers or Count von Zeppelin... and simply uses nature's most abundant gases and the power of the sun to inflate its sausage-like shape - no pumps or puff are required. All you need is a reasonably calm and sunny day. When exposed to the sun's radiation, the gases in the airship become excited, increasing in temperature and pressure... and lifting the mighty tube majestically into the air.

Now here's the really clever bit. A little like a worm cut in two by an inquisitive schoolboy, you can separate the eight metre length of the airship's black high-density film into two 4 metre sections... and get two mini flying machines for the price of one. Then it's up, up and away... though, to avoid interference with low-flying aircraft we heartily recommend that you keep this amazing contraption securely tethered.