concrete but you could do this wherever you find a strong metal flooring. You need 1. Soldering Iron 2. Solder 3. Wire 4. Shoes 5. 50 lb lift magnets 6. 2 9v batteries 7. Glue Gun The 9v battery will turn the standard magnet into an electro-magnet giving it more lift for a small duration of time. Enjoy! Disclaimer: As with thisexperiment and all other HouseHold Hacker videos. We cannot be held responsible for damage or mistakes made if attempting the experiments. These projects are ...