Ever wanted to make a battery but didn't have the time or the parts? Well here you go. You can literally make this in 5 minutes with only 4 parts. It is sealed and doesn't require chemicals... what more could you want!
Step 1: Parts and Tools
Not much is needed for this instructable, but you will need:
A film canister (or similar container)
Tissue paper or kitchen roll
Carbon rod (Pencil led or battery rod)
Electrolyte (Salty water or other salt in water)
As for tools,
Multimeter if you want to check it.