1. One 9-volt battery. You can buy this from any newsagents, supermarket or hardware shop.
2. Three pieces of plastic-coated wire. An adult will probably be able to find you some scrap pieces very easily.
3. A small torch bulb and bulb holder (again you can buy this from a hardware store).
4. A small piece of card.
5. Two paper fasteners (the kind with split pins).
6. One paper-clip.
7. A screwdriver.