To make a kite all you need is a carrier bag, sellotape, scissors and drinking straws. Firstly, trim the handles from the carrier bag, and open the bag out flat.
Next, trim two drinking straws and arrange in a crucifix shape on the opened carrier bag. Secure with a lot of sellotape! The string will need to be tied where the straws meet, but do that at the end, so you don't get tangled up.