My dad needs to get his wi-fi signal extended from the house, out to the garage. It's a detatched garage, and quite a ways from the house. If the door is open, and you stand right at the door, you can sometimes get 1 bar (If you're lucky).
So he needs a way to be able to get wi-fi out there, near the back of the garage, when the door is closed (As the Stark's say, 'Winter is coming').
What are some good, but hopefully not too expensive options?