Have you heard about master stock, where you save meat juices in the braising pot and add more seasoning and use it again and again for different meats and keep this up for 100 years and the stock just gets richer and more delicious? Coffee cans of nuts and bolts and washers are like that. When you need a fastener you go digging through it blissfully, whistling tunelessly. When you take anything apart you throw the hardware bits into the can. You can pass this container along, hypothetically, for generations. For confirmed putterers, this is our little whiff of immortality.