Ignition
plans
home
fuel
ammo
firing a spudgun
You could use that little (about 3 cm in length) black thing from an electric lighter. Be sure that the wire is close to the copper thing on the end. You could also buy a BBQ-ignitor. There are 2 wires with plastic things on the end. Cut of those plastic things and strip the wires. Put 2 nails in the ignition-chamber. They have to be very close to eich other. Connect the wires to the nails and if you have done it wright you have to see a spark between the nails when you press the button.
For pictures see
plans
You can make an ignition out of a gas lighter. Just extend the 2 wires and connect them too the 2 nails.