However, there are some ways to improve your Wi-Fi connection. And you can easily do this using a used soda or beer can made from aluminum.
Below is a very simple hack that uses these cans to boost your WiFi reception from around 2 bars to about 4 on average, varying between 3 and 5.
All you need for this DIY project are scissors or a knife and empty beer or soda cans – 1 or 2, depending on how many antennas there are on your router.
1. Clean Out the Can
Practically any substance that is found in cans like soda, beer, juice and more can create a sticky residue on the inside of the can. This can attract bugs and make your router sticky. Before you start cutting apart the can, thoroughly rinse it out with soap and warm water. Dry the can as thoroughly as possible.
2. Pull off the Tab
The tab for the soda can really has no use for this project, so it’s best to remove it. To remove the tab, simply bend the tab back and forth until you hear it snap.
3. Cut off the Bottom of the Can
Grab a utility knife and carefully cut a straight, horizontal line around bottom of the can at the point where the sides of the can start sloping to create the bottom.
4. Creating the Base
The base for your wifi extender will be the top of the can. To create the base, turn the can upside down and use your utility knife to make a cut horizontal cut that is similar to the one you made at the bottom of the can, but leaves an inch or so of metal to keep everything in one piece.
5. Cut the Side of the Can
Position the can so that the leftover piece of metal used to keep the base attached is opposite the location you intend to make a vertical incision in the can. Then open the can up to create a shape similar to a satellite dish.
6. Attaching the Can to Your Router
Place the can over the antenna for your Wi-Fi connection through the hole in the base. Using tape or another easily removable adhesive such as adhesive putty, secure the can to your router. Adjust the can to maximize the signal.
Source: Mind Blowing Videos