Please- let's not have constant reports of these lanterns! I send many up myself with my grandchildren. You can buy them in boxes of 10. They are nearly 5 feet tall with a burner underneath that produces a rather large flame. It brightly illuminates the white tissue they are made from and are really entertaining to send off. What produces a certain additional frisson of pleasure is knowing that someone, somewhere, is frantically videoing it with their mobile phone and getting very excited. Others are convinced they have seen UFOs. When you send several up together, the wind makes them move in such a way that people think aeroplanes are turning upside down.
One day, we will be banned for sending them up for 'littering'! But in the meantime, they are great fun. Just remember the key is 'orange' and try and enjoy them for what they are- a bit of fun, not a visitation by aliens! Those daft alien science fiction dramas have a lot to answer for!