Tin Can Calculator
Running out of batteries for your calculator? No worries! Recycle tin cans and pencils to generate enough electricity to power a calculator.
Contains: 1 can holder, 2 pencils, 1 white wire, 1 calculator holder, 1 calculator with wires, 2 pencil connectors, 2 pencil holders, 1 sand paper sheet, 6 screws, 1 adhesive foam and detailed instructions. Requires 2 used and cleaned aluminium soda cans, pencil sharpener, water, salt, small cross-head screwdriver not included.
Age: 8+ years.