Why It Works: Some people believe that aluminum foil can reduce static electricity on metal surfaces like door handles. In dry environments, static electricity can cause small shocks when touching metal objects. The theory is that foil can help dissipate this static charge.

How to Do It: Wrap the door handle with aluminum foil or place a foil ball on it, ensuring contact with the metal surface. This method might not completely eliminate static shocks but can reduce their frequency.

4. DIY Indicator for Door Usage
Why It Works: For those who want to monitor whether a door has been opened, placing a foil ball on the handle can act as a simple indicator. If the foil ball falls off or is displaced, it’s a sign that the door has been used.

How to Do It: Place a loosely crumpled foil ball on the door handle in such a way that it is likely to fall if the door is opened. This can be particularly useful for monitoring doors in shared spaces or for keeping track of entries and exits when you’re away.

5. Decorative Purposes
Why It Works: Some people use aluminum foil balls as a quick and inexpensive decorative touch, especially during holidays. Foil is shiny and can reflect light, adding a bit of sparkle to an otherwise plain door handle.

How to Do It: Wrap a ball of aluminum foil around the door handle, or shape the foil into decorative forms like flowers or leaves. This can add a festive touch to your home without much effort or expense.

Conclusion
While placing a foil ball on a door handle might seem unusual at first, there are practical reasons behind this trend. Whether it’s for hygiene, security, reducing static electricity, or even decoration, this simple practice has gained popularity for its versatility and ease of use. If you’re curious, give it a try and see if it serves any of these purposes in your home!