He takes 10 coins, aluminum foil and cardboard: here's how to create a battery !
The TV remote stopped working and you do not have batteries in the house? No need to panic, get some copper coins, aluminum and cardboard. After cleaning coins with vinegar and salt, cut the cardboard discs and soak them in vinegar. Then create similar discs with aluminum foil and stack them as shown, being careful to the order. The result? Really unexpected.