I've just found this flying lantern - looks good fun and a cheap pressie idea.
Simple idea- and it looks like it goes pretty high!
Night Glow Flying Lanterns, also known as Sky Lanterns, will add an exciting new element to any event. Their mysterious glow can be seen climbing several miles in the sky for around 20 minutes. Flight ceases when all the fuel has been burnt and the flame subsides then as the air in the lantern cools it will gently float back to the ground for a safe landing. The Lanterns will fly to more than 1,000 meters in altitude, providing an amazing show for all ages.
Night Glow Flying Lanterns are safe, fun and spectacular for any outdoor event, great at Barbecues etc.
Fuelled for 15-20 minutes of flying time.