Expect to spend around 20$ for this fun and rewarding project.
Step 1: Parts
1. Chemical resistant rubber glove. I bought mine at home depot, it dosent really need to be chemically resistant, just insulated enough to protect you from electricity.
2. Disposable camera
3. Aluminum foil
4. 2 Toggle Switches with On/Off Label Plate (Model:275-602) from the shack
5. Pushbutton switch from the shack
6. AA battery holder
7. Devcon weldit all purpose glue
8. Project box (As close to 3x2x1.5 as you can get) same as the one from the ignitor instructable
Step 2: Take apart the camera
1. Remove label, box, sticker, or whatever package the camera is wrapped in, so it is just bare plastic.
2. Find how the camera is held together most often it is small plastic latches around the camera, which can be bent open with a screwdriver.
3. Open the camera, and be very careful not to touch any of the circuitry.
4. Carefully remove the AA battery.
5. Discharge any current still in the capacitor by bridging the two leads with a metal screwdriver.
6. The circuitry is now safe to handle, so remove it from the camera casing.