A carefully placed strip of aluminum foil can dramatically improve home wireless reception. Most Wi-Fi routers project their signal in a sphere. But if yours sits against a wall, that means some of the signal is drifting out into the yard instead of covering the whole house.
To better direct the Wi-Fi, tear off a piece of aluminum foil about a third longer than the width of your router. Fold it in half lengthwise, then tuck in about half an inch on each side, forming a sturdy frame. Finally, bend the foil into a semicircle and stand it behind your router, with the open side of the circle facing the rest of your house.
For even better results, check out . The weekend project will walk you through creating a true parabolic dish out of household materials.